Macaroni-Tuna Casserole
["1 (8 oz.) pkg. shell macaroni", "boiling salted water", "1/4 c. butter or margarine", "1 Tbsp. minced onion", "1/3 c. flour", "1/2 tsp. salt", "few grains pepper", "2 c. milk", "1 c. grated Cheddar cheese", "1 (16 oz.) can tomatoes", "1 (9 oz.) can chunk-style tuna, flaked", "soft buttered bread crumbs"]
["Cook macaroni in salted water according to package directions. Rinse in hot water and drain.", "Meanwhile, melt butter in skillet. Add onion; cook over low heat for 5 minutes, stirring occasionally.", "Add and blend in flour, salt and pepper.", "Slowly add and stir in the milk.", "Cook and stir constantly until mixture is smooth and thickened.", "Add cheese, stir mixture until cheese melts. Stir in tomatoes and tuna; heat thoroughly.", "Turn drained macaroni into a 2-quart casserole.", "Pour the hot macaroni into a 2-quart casserole.", "Pour the hot tomato-tuna over the macaroni and toss to mix well.", "Sprinkle bread crumbs over the top.", "Bake at 375\u00b0 about 20 minutes or until mixture is thoroughly heated and crumbs are brown.", "Makes 6 to 8 servings."]
["shell macaroni", "boiling salted water", "butter", "onion", "flour", "salt", "pepper", "milk", "Cheddar cheese", "tomatoes", "tuna", "bread crumbs"]