Busy Mom Lasagna

Busy Mom Lasagna
1 lb ground beef
1/2 cup 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 cup shredded mozzarella cheese
1 1/2 cup shredded cheddar cheese
Brown beef with onion - drain. Add spaghetti sauce, cream cheese, and sour cream & mix well. Spray a 5 qt crock pot with PAM. Layer in the crock pot the noodles and beef mixture and cheeses. Repeat layers as necessary until cooker is full Cover and cook on high for 2 hrs. reduce heat to low for an additional 4 hrs.