Step 1

Preheat the oven the Cook bacon according to package directions until crispy. Chop into 1-inch pieces and set aside.

Step 2

In a large cast iron skillet over medium heat, melt butter. Add shallots and let simmer for 1-2 minutes. Add brussel sprouts and season with red pepper flakes, salt, and pepper. Stir and cook until tender, about 10 minutes.

Step 3

Remove from heat and pour in heavy cream. Top with both cheeses and bacon.

Step 4

Put the skillet into a preheated oven and bake for 12 minutes. Cheese should be bubbling.

Step 5

Remove from the oven and let it stand for 5 minutes. Serve hot.