Crispy Cacio e Pepe Brussels Sprouts: An Easy Air Fryer & Oven Recipe

Crispy, cheesy Cacio e Pepe Brussels sprouts that you can make in the air fryer or the oven! We toss the sprouts in garlic butter, roast them, and then top them with freshly cracked pepper and Pecorino Romano cheese!

There was a time, not so long ago, when the mere mention of Brussels sprouts would send shivers down my spine. Like many children, I harbored a deep-seated aversion to these miniature cabbage-like vegetables. Family dinners often involved a silent protest, a battle of wills over a plate of what I perceived as bitter, soggy green spheres. Oh, how I swore that once I was old enough to dictate my own meals, not a single sprout would ever grace my plate again. No secret pet to pass them to under the table; just pure, unadulterated grumbling until every last one was consumed.

Fast forward to adulthood, and much to my childhood self’s astonishment, Brussels sprouts have become a staple in my kitchen. My palate has evolved, and with the right preparation, these humble greens transform into something truly extraordinary. Forget the mushy, boiled versions of yesteryear; today, I embrace their versatility. Sometimes, I douse them in a sweet and savory honey garlic sauce, creating a sticky-sweet delight. Other times, I lean into the rich, peppery, and incredibly cheesy embrace of Pecorino Romano, transforming them into irresistible Cacio e Pepe Brussels Sprouts!

The journey to perfecting crispy Brussels sprouts took an exciting turn when I recently invested in an air fryer (affiliate link) during a sale. I truly cannot sing its praises enough, especially when it comes to vegetables. The very first recipe I tested in my new appliance was these Cacio e Pepe Brussels sprouts. I whipped them up one evening as a side dish for a balsamic chicken recipe I was developing, and the results were nothing short of spectacular. In just about 10 minutes, the air fryer coaxes out an incredible crispiness and flavor that makes these sprouts an instant favorite.

What is Cacio e Pepe? The Roman Inspiration Behind This Dish

Cacio e Pepe, meaning “cheese and pepper” in Roman dialect, is a classic Italian pasta dish hailing from Rome. It’s renowned for its deceptive simplicity, typically made with just four core ingredients: Pecorino Romano cheese, black pepper, pasta, and the magical starchy pasta water. When combined expertly, these elements create an incredibly creamy, intensely flavorful sauce that coats every strand of pasta. While it might sound basic, the balance of sharp, salty cheese with the pungent bite of fresh black pepper is truly extraordinary – far more delicious than its simple description might suggest. Think of it as the sophisticated, rustic Roman cousin to American macaroni and cheese, but with a unique depth.

In our Cacio e Pepe Brussels sprouts recipe, we ingeniously swap out the pasta for perfectly roasted Brussels sprouts. This substitution allows us to enjoy all the rich, cheesy, and peppery flavors of the traditional dish, but with the added bonus of crispy, crunchy vegetables. It’s a fantastic way to enjoy a lower-carb alternative that’s packed with nutrients and incredibly satisfying. The sprouts really shine, absorbing the garlic butter and then being generously coated in that glorious Cacio e Pepe essence, making them taste irresistibly cheesy and delicious.

Essential Ingredients for Cacio e Pepe Brussels Sprouts

One of the best aspects of this Cacio e Pepe Brussels sprouts recipe is its incredibly short and simple ingredient list. You likely have most of these staples in your pantry already, making this a perfect last-minute side dish that’s big on flavor with minimal fuss.

Brussels Sprouts: Fresh, firm Brussels sprouts are absolutely essential for achieving that desirable crispy texture. Look for brightly colored green sprouts with tightly packed leaves, avoiding any with significant yellowing or softness.
Salted Butter: Melted butter forms the flavorful base of our coating, ensuring the garlic powder and pepper adhere beautifully to the sprouts. It also encourages fantastic browning and a rich taste. If you only have unsalted butter, simply add a small pinch of fine sea salt to your melted butter to balance the flavors.
Garlic Powder: This provides a warm, aromatic garlic flavor that permeates the sprouts without the risk of fresh garlic burning during the high heat roasting process. It’s a key flavor enhancer that ties everything together.
Freshly Cracked Black Pepper: This is arguably the most critical component of the “pepe” in Cacio e Pepe. Using freshly cracked black pepper is non-negotiable for the best, most vibrant flavor and aroma. Pre-ground pepper simply doesn’t deliver the same pungent, floral kick that defines the dish. Don’t be shy with it – the more, the better for that authentic Cacio e Pepe experience!
Grated Pecorino Romano Cheese: This sharp, salty, hard Italian cheese, made from sheep’s milk, is traditional for Cacio e Pepe. Its distinct savory flavor adds incredible depth and umami. For the best melt and most intense flavor, always grate it fresh from a block.

No Pecorino Romano? No Problem!

While Pecorino Romano cheese is traditional and highly recommended for its authentic, robust flavor profile, it’s not always readily available or might not be to everyone’s taste. If you don’t have any Pecorino Romano on hand, or simply prefer a milder cheese, you can absolutely substitute it with freshly grated or shredded Parmesan cheese (Parmigiano-Reggiano). Parmesan will still provide a delicious, salty, and umami-rich flavor that works wonderfully in a pinch. The overall result will still be incredibly tasty, just with a slightly different cheesy nuance that’s equally delightful.

Mastering Brussels Sprout Preparation for Optimal Crispiness

Proper preparation is a critical step for achieving delightfully crispy Cacio e Pepe Brussels sprouts. Taking a few extra minutes here will pay off immensely in the final texture and flavor of your dish. Follow these simple steps to get them ready for roasting:

Wash and Dry Thoroughly: First, place your fresh Brussels sprouts in a colander and give them a thorough rinse under cold running water to remove any dirt or debris. Once washed, the most important step for achieving crispiness is to dry them meticulously. Spread them out on a clean dishtowel or use several layers of paper towels to pat them completely dry. Any residual moisture will cause the sprouts to steam rather than roast, leading to a soggy texture instead of the coveted browned and crisp edges we’re aiming for!
Trim and Halve: Next, trim off the woody, tough end of each Brussels sprout. You’ll typically only need to remove a small portion, about a quarter to a half-inch. While trimming, also peel away any loose, discolored, or damaged outer leaves that aren’t entirely intact, as these can become bitter or unpleasant when cooked. Finally, cut each Brussels sprout in half lengthwise. This crucial step increases their surface area, allowing for more contact with the hot air or baking sheet, which promotes even cooking, beautiful caramelization, and maximum crispiness.

Pro Tip for Busy Cooks: To significantly speed up your prep work, many grocery stores now offer pre-trimmed and pre-halved Brussels sprouts in their refrigerated produce section. This can be a huge time-saver without sacrificing quality for this particular recipe.

Why Fresh Brussels Sprouts are Best for This Recipe

While frozen vegetables are incredibly convenient and work wonderfully for many dishes, they unfortunately won’t yield the desired crispy results for these Cacio e Pepe Brussels sprouts. Frozen Brussels sprouts contain a much higher water content, which is released during cooking. This excess moisture prevents them from achieving that beautiful caramelization and crispy, charred texture we’re aiming for in the air fryer or oven. Instead, they tend to steam and become soggy, diluting the robust flavors. For truly crispy, golden-brown Cacio e Pepe Brussels sprouts, always opt for fresh produce.

Perfect Pairings: What to Serve with Cacio e Pepe Brussels Sprouts

These savory, cheesy, and peppery Brussels sprouts are incredibly versatile and make an outstanding side dish for a wide array of main courses. Their robust flavor profile complements both rich and lighter proteins beautifully, making them a fantastic addition to almost any meal. Here are some of our favorite main dishes that pair wonderfully with Cacio e Pepe Brussels sprouts:

Garlic Butter Baked Salmon: The richness of the salmon and the aromatic garlic butter harmonizes perfectly with the sharp cheese and peppery bite of the sprouts, creating a well-rounded meal.
Herb Butter Spatchcock Chicken: A flavorful roasted chicken provides a hearty, comforting base for the vibrant and zesty sprouts, making for a truly satisfying dinner.
Balsamic Tomato Baked Chicken: The slight acidity of the balsamic and the sweetness of the tomatoes beautifully cut through the richness of the cheese on the sprouts, offering a bright contrast.
Garlic Butter Skillet Steak and Shrimp: This luxurious surf-and-turf option finds a perfect earthy, peppery counterpoint in the sprouts, which also add a welcome textural crunch.
Pan-Seared Salmon with Lemon Butter Cream Sauce: The delicate flavors of the salmon and the creamy, bright sauce are wonderfully elevated by the zesty, peppery, and cheesy notes of the Brussels sprouts.
Garlicky Orzo Shrimp Scampi: A classic pasta and seafood dish finds a perfect green vegetable complement in these sprouts, adding a burst of flavor and a healthy component.
One Hour Whole Roasted Chicken: A simple yet incredibly satisfying meal, made complete with a side of these intensely flavorful Brussels sprouts, offering both freshness and richness.
Comforting French Onion Chicken Meatballs: The savory, umami-rich meatballs are beautifully balanced by the slight bitterness and peppery kick of the sprouts, creating a comforting and complex dish.
Garlic Honey Chipotle Salmon: The delightful blend of sweet and spicy in this salmon dish gets a wonderful earthy contrast and textural crunch from the Cacio e Pepe sprouts.
Garlic Butter Baked Chicken Breasts: A simple and elegant chicken dish that wholeheartedly welcomes the robust, garlicky, and cheesy flavors of Cacio e Pepe Brussels sprouts.
Pesto Baked Chicken with Tomatoes and Mozzarella: The fresh, herbaceous pesto, juicy tomatoes, and creamy mozzarella are a delightful match for the savory and peppery sprouts.
Spinach Artichoke Stuffed Salmon: A sophisticated and rich salmon dish that pairs exceptionally well with the rustic charm and bold flavors of the Cacio e Pepe sprouts.
Lemon Rosemary Chicken: The bright, aromatic notes of the lemon and rosemary in the chicken perfectly complement the savory, cheesy, and peppery Brussels sprouts, creating a harmonious meal.

Why Cacio e Pepe Brussels Sprouts Are an Absolute Must-Try

There are countless reasons to fall in love with these crispy, cheesy Cacio e Pepe Brussels sprouts. They’ve quickly become a permanent fixture in my meal rotation, and I’m confident they will in yours too! Here’s why they’re such a hit:

Incredibly Versatile Side Dish: These sprouts pair effortlessly with almost any main course you can imagine, from a simple weeknight chicken or fish to a more elaborate steak dinner. Their balanced, yet robust flavor profile makes them a universal crowd-pleaser that complements a vast array of cuisines and palates.
Minimalist Ingredient List, Maximum Flavor: With just a handful of common ingredients – essentially sprouts, butter, garlic, pepper, and Pecorino – you can create a dish bursting with complex, satisfying flavors. The magic lies in the quality of ingredients and the simple technique, proving that you don’t need a pantry full of exotic items to make something truly delicious and memorable.
Elegant Enough for Entertaining, Simple Enough for Weeknights: Whether you’re hosting a sophisticated dinner party, a festive holiday gathering (such as Easter, Thanksgiving, or Christmas), or simply looking for a quick, healthy, and satisfying weeknight side, these sprouts fit the bill perfectly. Their gourmet appeal belies their ease of preparation, making them a stress-free option for any occasion.
Lightning-Fast Cooking Time: Short on time but craving something delicious? The air fryer cooks these to crispy perfection in an astonishingly quick 10 minutes, making them an ideal choice for even the busiest evenings. Even when made in a conventional oven, they’re ready in a respectable 15-20 minutes, offering a convenient and rapid cooking solution.
A Delightful Way to Enjoy Vegetables: For anyone who claims to dislike Brussels sprouts (like my younger self!), this recipe is a true game-changer. The irresistible combination of rich garlic butter, shatteringly crispy texture, and a generous coating of sharp Pecorino and pungent black pepper transforms them into an addictive, savory treat that even the most fervent sprout skeptics will wholeheartedly adore.

Expert Tips for Perfect Cacio e Pepe Brussels Sprouts

To ensure your Cacio e Pepe Brussels sprouts turn out perfectly crispy and flavorful every time, keep these expert tips in mind:

Don’t Overcrowd the Basket/Pan: This is perhaps the most crucial tip for achieving crispiness. Whether you are using an air fryer or an oven, ensure the Brussels sprouts are spread in a single layer with sufficient space between each piece. Overcrowding will cause the sprouts to steam rather than roast or fry, leading to a soggy texture rather than the desired crispy, browned edges. If necessary, cook in batches to give them ample room.
High Heat is Your Friend: Roasting or air frying at a high temperature (375°F for the air fryer, 425°F for the oven) is absolutely key to achieving that perfectly crispy exterior and tender, cooked-through interior. High heat helps to caramelize the sugars in the sprouts and evaporate moisture quickly.
Shake or Toss Frequently: For even browning and consistent crispiness, especially when using the air fryer, remember to shake the basket vigorously every 3-5 minutes. If cooking in the oven, toss the sprouts with a spatula halfway through cooking to ensure all sides get exposed to the heat.
Adjust Pepper to Taste: The “pepe” in Cacio e Pepe is a defining characteristic, and it should be prominent. Feel free to adjust the amount of freshly cracked black pepper to suit your personal preference – add more for a bolder, spicier kick, or slightly less if you prefer a milder flavor. Just ensure it’s freshly cracked for maximum impact.
Serving Immediately: For the absolute best texture, these Cacio e Pepe Brussels sprouts are best enjoyed immediately after cooking when they are at their crispiest and the cheese is beautifully melted and bubbly. Their irresistible crunch will diminish as they cool.

Storage and Reheating Tips

If you happen to have any delectable leftovers, allow the Cacio e Pepe Brussels sprouts to cool completely to room temperature before transferring them to an airtight container. They can be safely stored in the refrigerator for up to 3-4 days. While they won’t retain the same initial crispiness as when freshly made, they are still incredibly delicious. To reheat and regain some of that coveted crispiness, spread them out in a single layer on a baking sheet and warm them in a preheated oven at 350°F (175°C) for 5-10 minutes, or pop them back in the air fryer for a few minutes until heated through and slightly re-crisped.

Cacio e Pepe Brussels sprouts are more than just a side dish; they’re a revelation. They beautifully showcase how simple ingredients and thoughtful preparation can elevate a humble vegetable into a culinary delight. They’re sure to become a beloved family favorite, just as they have in our home!

Yield: 5 servings

Cacio E Pepe Brussels Sprouts (Air Fryer + Oven)

Prep Time
5 minutes

Cook Time
10 minutes

Total Time
15 minutes

Prepare these incredibly crispy, cheesy Cacio e Pepe Brussels sprouts using either your air fryer or conventional oven! Tossed in a flavorful garlic butter, perfectly roasted, and then finished with generous amounts of freshly cracked black pepper and authentic Pecorino Romano cheese, they make a sensational side dish or appetizer.

Cacio E Pepe Brussels Sprouts (Air Fryer + Oven)

Ingredients

1 lb. fresh Brussels sprouts, thoroughly trimmed and cut in half
3 tablespoons salted butter, completely melted
¼ teaspoon garlic powder
½ teaspoon freshly cracked black pepper (or more, to taste)
½ cup freshly grated Pecorino Romano cheese (or Parmesan for substitution)

Instructions

PREPARE & TOSS: In a medium-sized bowl, combine the trimmed and halved Brussels sprouts with the melted butter, garlic powder, and freshly cracked black pepper. Toss vigorously until all the sprouts are evenly and thoroughly coated.

Cooking Methods: Choose Your Appliance

AIR FRYER METHOD: Preheat your air fryer to 375ºF (190°C). Arrange the seasoned Brussels sprouts in a single layer within the air fryer basket, ensuring not to overcrowd it (cook in batches if necessary). Air fry for 5 minutes. Open the air fryer, sprinkle half of the Pecorino Romano cheese over the sprouts, and give the basket a gentle shake. Close and continue to cook for another 3-5 minutes, or until the sprouts are tender-crisp, golden-brown, and the cheese is melted and slightly bubbly.
OVEN ROASTING METHOD: Position an oven rack in the center of your oven and preheat the oven to 425ºF (220°C). Line a large baking sheet with aluminum foil or parchment paper and lightly spray with cooking spray to prevent sticking. Spread the prepared Brussels sprouts in a single layer on the baking sheet. Roast for 15-18 minutes, or until they are fork-tender and beautifully browned and caramelized. Remove from the oven, sprinkle the remaining Pecorino Romano cheese over the hot sprouts, and for an extra bubbly, golden crust, you can pop them under the broiler for 30 seconds to 1 minute, watching carefully to prevent burning.

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