Jumbo pasta shells stuffed with a flavorful mix of ground beef, ricotta cheese, and Italian herbs, baked in marinara sauce and topped with melted mozzarella cheese. A comforting, family-friendly Italian-American classic.
Use freshly grated cheeses for best melting and flavor., Taste and adjust seasoning of the filling before stuffing shells., Letting the casserole rest after baking helps the filling to firm up and makes serving neater., Perfect served with a crisp green salad with vinaigrette, garlic bread, and roasted vegetables such as broccoli or asparagus., Substitutions and additions include replacing beef with Italian sausage or ground turkey, adding cooked spinach or mushrooms, and adding red pepper flakes for spice., Ricotta substitutes: blended cottage cheese or cream cheese with milk, or a mix of both., Make ahead: Assemble and refrigerate up to 24 hours before baking; add about 10 minutes extra baking time if baking from cold., Freezing: Assemble in freezer-safe container, cover tightly, freeze up to 3 months; thaw overnight in fridge and bake as usual.