Make this recipe a recipe that people in that category can eat. categories: ['low_calorie'], recipe: preheat oven to 400 degrees. grease 13 x 9 baking dish. cut potatoes into thin slices. layer potatoes in prepared dish. top with cheeses. melt butter in medium saucepan over medium heat. stir in flour, cook 1 minute. stir in milk, mustard, salt and pepper. bring to a boil. reduce heat and cook, stirring constantly, until mixture thicken. pour milk mixture over cheese and potatoes. cover dish with foil. bake 30 minutes. remove foil and bake 15 to 20 minutes or until potatoes are tender and top is brown. remove from oven, let stand 10 minutes before serving.

Target recipe: in a medium sauce pan melt butter and add flour,salt and pepper. pour in milk and stir until thick. set aside. grease a casserole dish. layer the potatoes then onions then cheese. repeat the layers. pour a little of the white sauce over these layers make sure you keep enough to pour over the top. repeat the next layer as you did the last two layers. when you are ready to bake this bake at 350°f for 1 hour then remove the top and bake until done. if you prefer the potatoes not to get brown keep covered as i do. this might take another 15 minutes depending in your oven.