1/4 cup butter or margarine
1/4 cup flour
1 teaspoon salt
2 cups milk
1/4 pound American cheese, cut up
1 (8 ounce) package shredded cheese
1 lb. whole wheat pasta, cooked and drained
Melt butter in large saucepan on low heat. Blend in flour and salt; cook and stir 1 minute. Gradually add milk; cook, stirring constantly, until thickened. Add cheese; stir until melted. Stir in pasta.
Pour into lightly greased 1-1/2-quart casserole. Bake, uncovered, at 350 degrees F for 20 minutes or until thoroughly heated.