Lasagna Roll-Ups - cooking recipe

Ingredients

8 pieces lasagna
2 Tbsp. olive oil
1/4 c. chopped onion
1 3/4 c. stewed tomatoes
2/3 c. tomato paste
1 3/4 c. (15 oz. container) Ricotta cheese
1 c. Mozzarella cheese
1 egg, slightly beaten
2 Tbsp. grated Parmesan cheese
1/2 tsp. salt
1/4 tsp. pepper

Preparation

Cook pasta according to package directions.
Drain and lay flat to cool on foil.
Heat oven to 350\u00b0.