01 -
Position a rack in the center of the oven and preheat to 190°C (375°F).
02 -
While the oven preheats, clean and trim the brussels sprouts. Combine the shredded fontina, cheddar and parmesan cheeses in one bowl and set aside.
03 -
Heat an oven-proof pan over medium heat with butter and garlic. Allow the garlic to infuse into the butter as it melts, but don't let it brown. You want it to soften and begin to simmer gently.
04 -
Once the garlic starts simmering, turn off the heat and remove the pan from the stove. Stir in the heavy cream, kosher salt, black pepper, garlic powder, and nutmeg. Fold in half of the combined shredded cheese mixture until incorporated.
05 -
Add the brussels sprouts to the pan, coat them in the cream sauce and spread in a single layer. Sprinkle the remaining cheese evenly over the sprouts. Bake for 18-25 minutes or until the cheese melts completely and the sprouts are tender when pierced with a fork. Serve warm.