- 1 (16 ounce) package thin spaghetti
- 4 cups prepared spaghetti sauce
- 1 cup small curd cottage cheese
- 1/2 cup fat-free sour cream
- 1 (12 ounce) package shredded mozzarella cheese
- Preheat oven to 400 degrees F (200 degrees C).
- Grease a 9×13-inch baking dish.
- Fill a large pot with lightly salted water and bring to a rolling boil. Stir in spaghetti and return to a boil. Cook until pasta is tender but still slightly firm, about 10 minutes. Drain well.
- Transfer spaghetti to a large bowl and toss with spaghetti sauce until well combined.
- Mix cottage cheese and sour cream in a bowl.
- Spread half the spaghetti with sauce into the prepared baking dish.
- Spread the cottage cheese mixture evenly over the spaghetti.
- Place the remaining spaghetti and sauce in an even layer over the cottage cheese mixture; sprinkle with mozzarella cheese.
- Bake in the preheated oven until bubbly and the cheese is browned, 30 to 40 minutes.