20 min tuna cassarole

1 box Kraft® macaroni and cheese dinner
1 can tuna, drained
1 can cream of chicken soup
1 can sweet peas, drained (or other vegetable optional)
2 Tblsp butter or margarine
1/2 cup shredded cheese
1/2 cup crushed potato chips

Cook macaroni and cheese according to directions, add margarine. cream together tuna and cream soup with electric mixer. Add to macaroni mix, and stir. Add peas, and mix well. Place in baking dish, sprinkle with cheese, and potato chips. Bake at 350 degrees for 10 minutes. Serves 4. (It is easy to double or triple this recipe)