Easy Lasagna

2 lb. ground beef, cooked and drained
1 48 oz. jar spaghetti sauce
1 pkg. wide lasagna noodles
1 8 oz. sour cream
8 oz. small curd cottage cheese
1 egg
1 1/2 lb. Monterey Jack cheese

Brown and drain meat. Add sauce. Cook noodles for 10 minutes and drain. Combine in a bowl: sour cream, cottage cheese and egg. Grate cheese.

In a 9x13 inch baking dish layer 1/3 sauce, 3 noodles and 1/3 sour cream mixture, 1/3 cheese. Repeat two more times.

Bake at 350 for 30 minutes.