Preheat oven to 350 degrees F and grease a 9x13 baking dish
Cook pasta according to package instructions. Drain and set aside.
While the pasta is cooking, in a large saute pan over medium high heat, brown the meat, breaking up with a spoon. Set aside.
Add the meat, marinara sauce, pasta, and 1 cup of cheese to the baking dish. Stir gently until everything is combined.
Sprinkle remaining 1/2 cup of mozzarella cheese on top and cover the pan with foil.
Bake for 14 minutes. Then remove the foil and bake another 5-10 minutes until browned on the top and bubbly.