Tuna Casserole
["1 small onion, chopped fine", "1 Tbsp. margarine", "1 (7 oz.) can tuna, drained and flaked", "1 can mushroom soup", "pepper to taste"]
["Saute onion in margarine until lightly brown.", "Add to tuna and mushroom soup.", "Add pepper.", "Bake in 325\u00b0 oven for 30 minutes. May be topped with cornstarch and milk.", "Season to taste.", "Makes 4 servings."]
["onion", "margarine", "tuna", "mushroom soup", "pepper"]