1 c. chopped onion
1/4 c. butter
3 (14 oz.) cans whole tomatoes, undrained and quartered
3 (16 oz.) cans cut green beans, drained
1 tsp. salt
3/4 tsp. oregano
1/4 tsp. pepper

Saute onion in butter in a large saucepan over low heat until tender. Add remaining ingredients; simmer 15 minutes or until thoroughly heated.