How to Make Leftover Spaghetti Bake

Say goodbye to food waste with this delicious leftover spaghetti bake. By combining your leftover spaghetti and marinara sauce with melted cheese and Italian herbs and spices, you'll create a brand-new meal that's comfort food at its finest. The noodles become tender and the melty cheese turns crispy, bubbly, and golden brown on top. 

– leftover spaghetti noodles (cooked) – pasta sauce – eggs – Italian seasoning – garlic powder – onion powder – salt – Parmesan cheese – red pepper flakes (optional) – mozzarella cheese – fresh basil or parsley

Recipe Ingredients

Preheat oven to 350 degrees F. Grease a 9"x13" baking dish with cooking spray.

Recipe Instructions

In a large mixing bowl, use tongs or a large spoon to combine the leftover spaghetti noodles, pasta sauce, eggs, Italian seasoning, garlic powder, onion powder, salt, Parmesan cheese, and red pepper flakes (if using), making sure to coat the noodles well.

Recipe Instructions

Spread into prepared baking dish, cover with foil, and bake for 30 minutes.

Recipe Instructions

Remove foil and add grated mozzarella cheese. Cook uncovered for 10 minutes, until cheese is melted and bubbly. Garnish with fresh herbs and serve immediately.

Recipe Instructions

Avoid pre-shredded cheese. For optimal melting, make sure that you buy whole mozzarella and Parmesan cheese, and grate it yourself. Because the pre-shredded cheeses have preservatives, they don't always melt well.

Recipe Tips


I create easy recipes that are mainly vegetarian and vegan. And I have a huge sweet tooth, so dessert is never far behind!  Sign up to get recipes delivered to your inbox and get my FREE Guide on Money Saving Tips on Buying Groceries!