Spaghetti Pie

1 lb. ground round
1/4 t. salt
1/4 t. pepper
2 8-oz. cans tomato sauce
1 1/2 c. sour cream
2 oz. cream cheese, softened
1/2 c. chopped green onions
4 c. hot cooked spaghetti (~8 oz. uncooked)
1 1/3 c. shredded cheddar

Preheat oven to 350. Cook meat in a large nonstick skillet until browned. Drain and return to pan. Stir in salt, pepper, and tomato sauce. Bring to a boil, then reduce heat and simmer 20 minutes. Combine sour cream, green onions, and cream cheese in a small bowl. Place the noodles in a 2-quart casserole dish coated with cooking spray. Spread the sour cream mixture over noodles. Top with meat mixture and sprinkle with cheese. Cover and bake for 25 minutes. Uncover; bake an additional 5 minutes or until cheese is bubbly. Serves 6.