This brussels sprouts au gratin is the perfect cheesy side to serve throughout the holidays. Brussels sprouts are baked in an irresistible creamy sauce until crisp and golden. It's an easy one-pan recipe, and it's ready in just 35 minutes.
Preheat your oven to 400 degrees Fahrenheit. Add the bacon to a medium-sized, oven-safe frying pan over medium heat and cook until it's crispy, about 10 minutes. Remove the bacon from the pan and crumble it once it's cool.
4 strips bacon
Prep the veggies while the bacon is cooking. Then, add the brussels sprouts to the pan the bacon was cooked in and toss to coat. Top with the onion, garlic, salt, and pepper. Put the pan back onto the heat and cook for 5 minutes.
2 lb brussels sprouts, ½ medium onion, 3 cloves garlic, ½ teaspoon EACH: salt and pepper
Put the flour into a small bowl or cup and add the stock, a little at a time, to make a slurry.
¾ cup chicken stock, 1 tablespoon flour
Pour the slurry and the cream over the brussels. Add most of the cheddar and parmesan and mix everything together well. Sprinkle the remaining cheese and the crumbled bacon over top.
½ cup cream, ½ cup grated cheddar, ½ cup grated parmesan
Put the pan into the oven and bake until the sauce has thickened and the brussels are starting to brown on top, 15-20 minutes.