1 box macaroni and cheese
3/4 cup milk
1/4 cup butter
1/2 cup green pepper
1/2 cup chopped onion
1 Tbsp. butter
1 can cream of celery soup
1 can Tuna
14 oz. mushrooms

Cook macaroni. Saute onion and green pepper in 1 tablespoon butter and cheese packet from box. Add rest of ingredients and heat in microwave 5-10 minutes until heated through.