Lasagna - cooking recipe

Ingredients

1 large onion, chopped
1/3 c. olive oil
2 lb. ground beef
2 cans (6 oz.) tomato paste
2 (8 oz.) cans tomato sauce
1 lb. curly lasagna
1 lb. Ricotta cheese
1 lb. Mozzarella cheese, sliced
pepper
salt
oregano
basil

Preparation

Saute onions in oil until tender.
Add beef and brown.
Add remaining ingredients, except cheese and lasagna.
Bring to boil, cover and simmer.
Cook and drain lasagna; rinse with cold water. Pour a little sauce, lasagna and Ricotta and top with more sauce. Repeat layers two times.
Place Mozzarella on top.
Bake at 350\u00b0 for 30 minutes.