Gluten Free Lasagna

The best gluten free dishes seem to be the ones with a small amount of "bready" stuff. Like lasagna. Here's my moms recipe...
1/2lbs ground beef or sausage
1 small onion, diced
1 clove garlic, chopped
1 can stewed, chopped tomatoes
3 cans tomato sauce
Italian seasoning to taste (about 2tsp)
Salt and pepper to taste
1 pint sour cream
1 pint cottage cheese
1 egg
1/2-3/4 cup milk
1/4 cup Parmesan
Lasagna noodles (The Deboles Gluten Free ones are really good).

Preheat oven to 350. Spray a large (9x13) glass casserole dish, set aside.
Cook ground beef or sausage until brown and cooked through. Set aside. Sauté garlic and onion until tender. Add tomatoes, tomato sauce, and seasonings. Put meat in and simmer.
In a medium bowl mix egg, Parmesan, sour cream, cottage cheese and milk.
Layer meat, cheese and noodles. There should be two layers of noodles. The noodles don't need to be precooked. If you like, put some mozzarella on top. Bake at 350 degrees for one hour. Let it set up for at least 15 minutes, otherwise it will be soupy when you dish it up.