Tomato Lasagne Roll-Ups - cooking recipe

Ingredients

8 pieces curly edge lasagne
2 Tbsp. oil
1/4 c. chopped onion
1 (14 1/2 oz.) can stewed tomatoes
1 (6 oz.) can tomato paste
1 (15 oz.) Ricotta cheese
1 (10 oz.) pkg. frozen chopped spinach, thawed and well drained
1 c. shredded Mozzarella cheese
1 egg, slightly beaten
2 Tbsp. Parmesan cheese

Preparation

Cook pasta; drain.
Lay flat on foil to cool.
Heat oil; add onion.
Cook until tender.
Add tomatoes and tomato paste.
Heat to boiling.
Reduce heat.
Simmer 5 minutes, stirring to break up tomatoes; set aside.