01 -
Heat oven to 350°F. Spray a 9x13-inch baking dish with cooking spray.
02 -
Cook ziti according to package directions. Drain and set aside.
03 -
Cook sausage in large skillet until no longer pink. Drain fat. Mix in spaghetti sauce.
04 -
Mix cottage cheese, cream cheese, sour cream, eggs, and 1 cup mozzarella in a large bowl.
05 -
Stir meat sauce and pasta into cheese mixture. Pour into baking dish. Top with remaining 2 cups mozzarella.
06 -
Cook uncovered for 30-40 minutes until bubbly and cheese is golden brown.