2 tbsp unsalted butter 2 tbsp flour 1/2 tsp salt 1 1/2 cup milk 1/4 tsp cracked black pepper optional: 1/2 cup grated cheese, such as swiss, cheddar, gruyere or parmesan Melt butter over medium-high heat in wide saucepan Add flour, salt and pepper and cook, stirring with whisk, until light golden brown Add milk and continue whisking, until mixture is thick and bubbly Remove from heat and adjust seasoning, adding cheese if desired and stirring until melted Serve over pasta, bisquits, steamed vegetables, or use as an ingredient to lasagne or a sauce for a casserole