Sour Cream Noodle Bake

My first ever Pioneer Woman recipe!  Probably not as good as her famous cinnamon rolls, but probably not near as bad for you either.  This recipe looked delicious in her pics and it looked easy to make.  Win, win!  It made for a quick supper and was pretty tasty to boot.

Sour Cream Noodle Bake
Adapted very slightly from The Pioneer Woman

1 lb. ground beef
1 onion, chopped
1 15-oz. can tomato sauce
1 can diced tomato (I used fire roasted)
8 oz. egg noodles
1/2 cup sour cream (I use light)
1 1/4 cups cottage cheese (I use light)
1 cup grated cheddar cheese

Brown beef with the onion.  Drain off the fat.  Add tomato sauce and diced tomato to the beef.  Add salt, pepper and whatever other spices you like as well.  Stir well.  Simmer while you prepare the noodles.  Cook the noodles according to package directions.  Combine sour cream and cottage cheese.  Mix sour cream mixture into the noodles once cooked and drained.  Layer 1/2 of the noodles in a greased casserole dish.  Top with 1/2 the meat mixture and 1/2 the cheese.  Repeat layers.  Bake at 350 for about 20 minutes.