Step 1.

• Cook pasta according to directions. Drain and set aside.

Step 2.

• Preheat oven to 350F.

Step 3.

• Add the olive oil and onions to a saucepot, and cook over medium heat for 5-7 minutes, or until the onions are soft and translucent. Add the garlic and cook for another 2 minutes. 

Step 4.

• Add crushed tomatoes, sugar, and salt. Stir to combine. 

Step 5.

• Cover pot, allow sauce to come to a simmer, then reduce heat to low, and let simmer for 20 minutes. 

Step 6.

• Fold in chopped basil and simmer for 5 minutes. 

Step 7.

• Add reserved pasta and meatballs and stir. Layer 2½ cups mozzarella cheese with pasta mixture into a greased casserole dish. Top with remaining mozzarella cheese and parmesan cheese.

Step 8.

• Bake for 20 minutes, then broil for 5 minutes. 

Step 9.

• Plate. Garnish with chopped basil.