Preheat the oven to 375 degrees.

In a large oven safe skillet brown the bacon until crispy, remove from the skillet and set aside on a paper towel lined plate. 

Add the sliced Brussels sprouts cut side down to the skillet, allow the sprouts to cook undisturbed in the bacon grease for 4-5 minutes. Flip when the sprouts are golden brown. Cook 2-3 more minutes and remove from the skillet. 

Wipe the skillet clean and add heavy cream, garlic and parmesan. Let the mixture simmer over medium low for a few minutes until it begins to bubble. Be sure to stir, otherwise the cheese will stick to the bottom of the pan. When a thick Alfredo sauce has formed remove from heat.

Add the sprouts cut side down and top with the shredded cheese and half the bacon. 

Bake at 375 degrees F for 15 minutes. Add the additional bacon, salt and pepper to taste, serve immediately.