Lasagna - cooking recipe

Ingredients

1 lb. hamburger
1 jar spaghetti sauce (large)
1 box lasagna noodles
1 (1 lb.) tub Ricotta cheese
1 c. Mozzarella cheese plus small amount for top
1 egg

Preparation

Boil noodles and drain. Brown hamburger and drain.
Mix egg with Ricotta cheese.
Add Mozzarella cheese.