Cheesy Brussels Sprouts with Bacon

butter

sliced shallots ((this was about 2 shallots for me))

garlic, minced

bag of fresh Brussels sprouts, cored and halved ((or equivalent amount of smaller containers))

kosher salt

black pepper

paprika

heavy cream ((might be labeled as heavy whipping cream))

shredded sharp white cheddar cheese ((freshly grated is best))

shredded Gruyere cheese ((freshly grated is best))

slices cooked bacon, crumbled ((or about 1/2 cup bacon bits))

minced fresh parsley, for garnish