Spaghetti Bake

My Sister in law shared this recipe with me.  I think it is delicious, and it adds variety to the menu without a lot of new ingredients.  It is also a great way to use some of that free pasta!

Ingredients:
1 Package Cream Cheese
16 oz. Sour Cream ( I used about 1/2 that becase I had an open carton) 
12 oz. Cooked Spaghetti
1 lb ground hamburger
Onion (optional)
26.5 oz. Spaghetti Sauce of choice
1/2 c. Grated Cheese

Directions:
Soften cream cheese and mix with sour cream.  Spread in bottom of 9x13 dish. Layer Spaghetti on top of cream.  Brown hamburger & onion.  Add on top of pasta.  Pour sauce over the top.  Sprinkle with cheese. Bake at 350 degrees for 15-20 min. or until bubbly.