1/2 c  Divided margarine
1 md Chopped onion
1/4 c  Cornstarch
3 c  Milk
1/4 ts Hot pepper sauce
2    Chicken flavor bouillon
Cubes
2 cn (6.5-oz each) drained and
Flaked tuna
1 pk (10-oz) frozen chopped
Thawed broccoli
8 oz Elbow macaroni cooked 6
Minutes and drained
1 1/4 c  Shredded cheddar cheese
Divided
1/2 c  Fresh bread crumbs

Spray 1 quart casserole with cooking spray. In 2 quart saucepan melt 1/4
cup of the margarine over medium heat. Add onion; saute 3 minutes. In small
bowl stir corn starch, milk and hot pepper sauce until smooth; add to
onions in saucepan. Add bouillon cubs. STirring constantly, bring to a boil
and boil 1 minute. In large bowl combine sauce, tuna, broccoli, elbow
macaroni and 1 cup of the cheese. Turn into prepared casserole. In small
bowl combine bread crumbs, remaining 1/4 cup cheese and remaining 1/4 cup
margarine, melted; sprinkle over casserole. Bake in 350 degree oven 25
minutes or until topping is lightly browned.