Recipe for Italian Flounder Roll-Ups

1-1/2 lbs. flounder or sole fillets
10 ounces frozen French cut green beans
2 Tbs. onion, chopped
1 cup spaghetti sauce
2 Tbs. grated Parmesan cheese

Preheat oven to 400°F. Divide fish into 4 servings and set aside. Place green beans and onions in a steamer basket over boiling water. Cover pan and steam 7-8 minutes or until tender. Divide mixture evenly among the middle of each fish portion. Start with narrow end of fillet and roll up. Place in a baking pan with ends down. Pour spaghetti sauce over fish roll-ups. Sprinkle with cheese and bake 15-20 minutes, until fish flakes easily.