Find recipes for Easter Brunch Lasagna and other Course recipes. Get all the best recipes at . Recipe directions: In a heavy saucepan, melt butter over medium heat. Stir in flour, salt and pepper until smooth. Gradually add milk. Bring to a boil; cook and stir for 2 minutes or until thickened. Remove from the heat; stir in the onions, lemon juice and hot pepper sauce.