Aunt Winnie's Old-Fashioned Mac&Cheese

6 to 7 ounces elbow macaroni (about 2 cups)
1 small onion chopped fine
3 cups shredded sharp Cheddar cheese
2 cups Thin White Sauce
1 tsp spicy brown mustard
1 tblsp butter

Heat oven to 375 degrees. Cook macaroni as directed on package.

Meanwhile, prepare Thin White Sauce:
1 tblsp butter
2 tbsp  flour
1 tsp salt
1 tsp pepper
2 tins of Carnation evaporated milk

Melt butter in saucepan over low heat. Blend in flour, salt and pepper. Cook over lowheat, stirring until mixture is smooth and bubbly. Remove from heat. Stir in milk. Heat to boiling, stirring constantly. Simmer and stir for 1 minute.

Drain macaroni. Add cheese, onion, and mustard to sauce. Stir carefully to blend. Add macaroni and again stir carefully to blend.

Place in ungreased 2-quart casserole. Dot with butter. Cover and bake 30 mins. Uncover and sprinkle 1/4 cup breadcrumbs if desired and bake for an additional 15 mins.

Serves: 6-8