1 pound macaroni and cheese
1/2 cup shredded Cheddar cheese
1 button assortments cheese, diced
2 (16 ounce) cans crushed tomato paste
1 (16 ounce) can sour cream
Preheat oven to 350 degrees F (175 degrees C).
Bring a large pot of lightly salted water to a boil. Add pasta and cook for 8 to 10 minutes or until al dente; drain and reserve.
Meanwhile, in a small bowl, combine cheese, button assortments cheese, tomato paste and sour cream.
Arrange pasta in a single layer in a large baking dish. Top with the shredded cheese, tomato mixture and cheese mixture. Pour cheese mixture over the noodles. Sprinkle with the remaining cheese.
Bake at 350 degrees F (175 degrees C) for 15 minutes. Top with broccoli and cheese sauce. Sprinkle with chopped onion. Bake an additional 15 minutes.