Crockpot Lasagna

1 lb. ground beef
1/2 c. onion, diced
16 oz. jar spaghetti sauce
4 oz cream cheese, softened
4 oz. sour cream
12 oz pkg. wide egg noodles, uncooked
1 1/2 c. shredded mozzrella cheese
1 1/2 c shredded cheddar cheese

In a large skillet, brown beef with onion; drain. Add spaghetti sauce, cream cheese and sour cream; mix well. Spray crockpot with non-stick spray. Layer in crockpot with part of the noodles, beef mixture and cheeses. Repeat layers as necessary. Cover and cook on high for 2 hours, reduce heat to low for an additional 4 hours.
Makes 6 - 8 servings.