Luby's Mac n Cheese Ingredients 2 cups dry elbow macaroni ( 8 oz.) 2 tablespoons nonfat dry milk powder 2 tablespoons all-purpose flour 1 tablespoon butter or 1 tablespoon margarine, melted 1 1/4 cups boiling water 3 cups American cheese, shredded ( 12 oz.) 1/4 teaspoon salt Directions Cook macaroni according to package directions. Heat oven to 350ºF. In a large bowl, mix dry milk, flour, and butter. Gradually add boiling water, beating constantly. Add 1 1/2 of the…