Bacon Brussels Sprouts Gratin

INGREDIENTS:

1 1/2 pounds brussels sprouts, halved
8 oz. bacon, cooked and crumbled
1 cup sharp cheddar cheese, grated
1/2 cup fontina cheese, grated, optional
3/4 cup heavy cream
2 tablespoons extra-virgin olive oil
1 egg
1 sprig rosemary, minced
1 teaspoon garlic powder
1 teaspoon onion powder
1/2 teaspoon red pepper flakes, optional
Kosher salt and freshly ground pepper, to taste

DIRECTIONS:

Preheat oven to 400º F.
Toss brussel sprouts in olive oil and season generously with salt and pepper. Place them in a large baking dish and roast for 15-20 minutes, or until semi-softened.
In a large bowl, whisk together egg, heavy cream, rosemary, garlic powder, onion powder and red pepper flakes (if using), then stir in cheeses.
Remove brussel sprouts from oven and add 3/4 bacon to the baking dish. Pour cheese mixture over the top and stir everything together, then top with remaining bacon …