Name: Air Fryer Brussels Sprout Casserole with Bacon Recipe
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: American
Ingredients: 1 pound fresh Brussels sprouts (trimmed and halved); 1 Tbsp olive oil (or melted butter); ¼ tsp salt (or to taste); ¼ tsp black pepper (or to taste); ½ tsp garlic powder; 4 slices bacon (cooked and crumbled); 1 small shallot (finely diced); 1 tsp Dijon mustard (optional); ½ cup heavy cream or half and half; ½ cup shredded Gruyere cheese (divided); ½ cup shredded sharp white cheddar cheese (divided); ¼ cup panko breadcrumbs; 1 Tbsp melted butter (only if using breadcrumbs)

If you’re craving a delightful veggie dish that bursts with flavor and a touch of indulgence, this Air Fryer Brussels Sprout Casserole with Bacon Recipe is about to become your new go-to. Crisp-tender Brussels sprouts roasted to perfection mingle with smoky bacon, creamy cheese, and a hint of garlic, all cooked conveniently in your air fryer. The result is a casserole that is rich, comforting, and surprisingly simple to prepare—guaranteed to impress both veggie lovers and skeptics alike. Let’s dive into how you can make this irresistible side or main dish at home!

Ingredients You’ll Need

A top-down view of multiple small clear glass bowls filled with different ingredients neatly placed on a wooden surface. In the top left, a large white bowl holds fresh Brussels sprouts cut in half, bright green and textured with layers. To the right, small bowls contain finely chopped onions, pale yellow breadcrumbs, crispy bacon pieces in deep red-brown, and a light golden clear liquid, likely oil. Near the center bottom, two small bowls hold different shredded cheeses, soft white and pale yellow, fluffy and stringy. Another small bowl has smooth yellow mustard in a soft dollop, while a measuring jug filled with white cream or milk sits on the right side with clear measurement marks. There is also a small white dish with a square of light yellow butter. The background is a warm brown wood with visible natural grain. photo taken with an iphone --ar 4:5 --v 7

The beauty of this Air Fryer Brussels Sprout Casserole with Bacon Recipe lies in its straightforward ingredients. Each one plays a crucial role, from the crispy bacon adding smoky depth to the creamy cheeses that give it richness and a golden crust. Freshness and balance are key here, making every bite a celebration of flavor and texture.

1 pound fresh Brussels sprouts: Trimmed and halved for even cooking and perfect bite-sized pieces.
1 Tbsp olive oil: Or melted butter to add richness and help the sprouts get that lovely caramelization.
4 slices bacon: Cooked and crumbled, providing a smoky, savory punch that’s hard to beat.
¼ tsp salt: Season lightly to enhance natural flavors without overpowering.
¼ tsp black pepper: Adds just the right touch of heat and earthy notes.
½ tsp garlic powder: Infuses a subtle, comforting garlicky aroma throughout the dish.
1 small shallot: Finely diced for a mild onion flavor that adds freshness and crunch.
1 tsp Dijon mustard (optional): Brings a hint of tangy complexity that brightens the creamy sauce.
½ cup heavy cream or half and half: Creates a luscious sauce that coats every sprout.
½ cup shredded Gruyere cheese: Known for its smooth melt and nutty flavor, divided for layering.
½ cup shredded sharp white cheddar cheese: Adds a bold sharpness and melty texture, also divided.
¼ cup panko breadcrumbs (optional): For a crunchy topping that adds a delightful contrast.
1 Tbsp melted butter (only if using breadcrumbs): Coats the panko to give it a golden, crispy finish.

TIP

You’ll find the full ingredient list, instructions, and print option in the recipe card below.

How to Make Air Fryer Brussels Sprout Casserole with Bacon Recipe

Step 1: Season the Brussels Sprouts

Start by tossing the trimmed and halved Brussels sprouts in olive oil, salt, pepper, and garlic powder. This simple seasoning ensures every sprout is well-coated, bringing out their natural nuttiness and prepping them for that irresistible crispness when air fried.

Step 2: Cook the Brussels Sprouts

Spread the seasoned sprouts in a single layer inside your air fryer basket. Cook at 400°F for about 10 to 12 minutes, shaking the basket halfway through. This step gives them a beautiful golden-brown color and that tender-crisp texture that makes this casserole so special.

Step 3: Mix the Casserole Ingredients

Remove the cooked Brussels sprouts and combine them with crumbled bacon, heavy cream (or half and half), Dijon mustard, diced shallots, and half of the shredded Gruyere and cheddar cheeses. This creamy, flavorful mixture is the heart of your casserole, balancing crunch, bacon savoriness, and cheesy goodness.

Step 4: Assemble and Air Fry the Casserole

Transfer the mixture to a greased baking dish that fits your air fryer. Cook at 400°F for 5 to 7 minutes until the cheese melts and bubbles gently. For an extra crunch, sprinkle the remaining cheese on top, then add panko breadcrumbs tossed in melted butter if you like. Return to the air fryer for another 3 to 5 minutes to brown the cheese and breadcrumbs to perfection.

How to Serve Air Fryer Brussels Sprout Casserole with Bacon Recipe

An oval white dish filled with a baked casserole that has a golden brown crumb topping. Under the crispy top, there are green Brussels sprouts, some browned and crispy from baking, mixed with a creamy sauce visible around the edges. The crumb layer is uneven with toasted golden crumbs and darker browned bits, giving it a crunchy texture. The dish is placed on a white towel with blue stitching, and fresh green Brussels sprouts are scattered around on a white marbled surface. A vintage silver spoon is lying next to the dish. photo taken with an iphone --ar 4:5 --v 7

Garnishes

To add freshness and a pop of color, garnish your casserole with finely chopped fresh herbs like parsley or chives. A light sprinkle of cracked black pepper or a few red pepper flakes can bring an extra layer of flavor that wakes up your taste buds.

Side Dishes

This casserole pairs beautifully with roasted meats such as chicken or pork, or alongside a hearty grain like quinoa or wild rice. The creamy and savory notes help round out any meal, making it a crowd-pleaser for holiday dinners or casual weeknight feasts.

Creative Ways to Present

For a more elegant presentation, serve individual portions in ramekins straight from the air fryer. Or layer it in a glass casserole dish to showcase the cheesy layers and golden topping. This dish also tastes fantastic as a leftover atop toasted bread for a quick snack or brunch option.

Make Ahead and Storage

Storing Leftovers

Simply cover your casserole tightly with plastic wrap or foil and refrigerate. Leftovers will keep well for up to 3 days, giving you plenty of opportunities to enjoy this comforting dish again without any hassle.

Freezing

If you want to make this Air Fryer Brussels Sprout Casserole with Bacon Recipe ahead of time, you can freeze it before baking. Use a freezer-safe container and freeze for up to 2 months. When ready to eat, thaw overnight in the fridge and air fry until warmed through and bubbly.

Reheating

Reheat leftovers in the air fryer or conventional oven to preserve that crispy topping and creamy interior. Heat at 350°F for about 8 to 10 minutes or until heated through. Avoid microwaving to keep the texture intact and delicious.

FAQs

Can I use frozen Brussels sprouts for this casserole?

While fresh Brussels sprouts yield the best texture, you can use frozen if needed. Just be sure to thaw and drain them well, then adjust cooking times slightly to avoid sogginess in the casserole.

Is there a vegetarian version of this recipe?

Absolutely! Omit the bacon and consider adding smoked paprika or a splash of liquid smoke to keep that smoky depth. You could also toss in sautéed mushrooms or caramelized onions for extra flavor.

Can I substitute cheeses?

Yes! Gruyere and sharp cheddar provide a nice balance of nutty and sharp flavors, but feel free to experiment with fontina, mozzarella, or even a blue cheese crumble for a twist.

Do I have to use panko breadcrumbs?

Panko breadcrumbs add a lovely crunchy topping, but they are optional. If you prefer a softer top, skip them or sprinkle extra cheese instead for a lush, melty finish.

How spicy is this casserole?

This recipe is mild by default, with just a subtle kick from black pepper and optional Dijon mustard. You can easily add crushed red pepper flakes or hot sauce to the seasoning mix for more heat if desired.

Final Thoughts

This Air Fryer Brussels Sprout Casserole with Bacon Recipe is such a joyful way to enjoy Brussels sprouts, turning a humble veggie into a show-stopping dish bursting with flavor and texture. Whether for a holiday dinner or a cozy weeknight meal, it invites everyone to the table with warmth and deliciousness. Give it a try and watch this become a cherished classic in your kitchen!

Air Fryer Brussels Sprout Casserole with Bacon Recipe

Ingredients You’ll Need