Here's what you need:
3/4 Box Spaghetti – Cooked and cooled slightly
1 Cup Parmesan Cheese
1/4 Cup Marinara Sauce
Whisk egg in a large bowl. Add (slightly cooled) cooked spaghetti, parmesan cheese, and marinara sauce.
Toss everything together until well mixed. Transfer into a well greased muffin tin and using the back of a teaspoon press down the center of each to create nests. Bake in a preheated oven for 15-20 minutes at 375˚F (190˚C).
Remove from oven and let cool slightly before removing from pan. Top with meatballs, additional marinara and cheese. Enjoy!