Just lay crescent dough in a casserole and whip up a dinner that’s almost too tasty to be real

Servings: 6

4 tablespoons butter
2 cloves garlic, minced
1 tablespoon finely chopped parsley
1 package premade croissant dough sheet
2 medium onions, thinly sliced
4 large red bell peppers, thinly sliced
2 packages frozen cooked Italian meatballs, thawed and halved
3½ cups marinara sauce
2 cups shredded cheddar cheese
2 cups shredded mozzarella cheese