Ingredients 2 cup macaroni, uncooked 3 tablespoon butter or margarine 1 sm onion, finely chopped 2 tablespoon flour 1 teaspoon salt 1 ts dry mustard 1 teaspoon salt 4 ts pepper 2 cup milk 1/2 cup shredded cheddar cheese     1 each roll (hard crust sourdough or french) 2 tablespoon butter 3/4 c shredded cheddar cheese Directions: Cook macaroni according to package directions. In large saucepan, melt butter. Add onion and cook until tender. Stir in flour, salt. mustard, salt and pepper. All milk slowly, stirring constantly, and cook until sauce is thickened and bubbly. Add cheese and stir until melted. Combine cooked macaroni and cheese mixture and mix well. Pour into buttered casserole. (I use one that's about 12 inch square). Top with topping and bake in 375 oven for 20 - 25 minutes. To make topping: tear roll apart and use steel blade of food processor to chop into fine bread crumbs. Melt better in small saucepan then add crumbs and toss until covered with butter. Combine buttered crumbs with cheese and spread over casserole. I generally serve this with sauteed Kielbasa.