Make this recipe a recipe that people in that category can eat. categories: ['low_fat'], recipe: mix dry ingredients in a saucepan. whisk in milk. cook over medium heat, whisking constantly, until it thickens and bubbles. cook and stir 30 seconds more, then remove from the heat. whip in the margarine and mustard. add more milk or water if mixture is too thick. add hot, cooked macaroni, and mix well. enjoy!

Target recipe: preheat over to 350 degrees. cook pasta according to package directions without added fat or salt; drain and transfer to a large bowl. while pasta is still hot, stir in sour cream; set aside. heat milk in a small saucepan over medium heat until tiny bubbles appear just around the edges (known as scalding). reduce heat to low, add cheese and simmer until cheese melts; stirring constantly with a wire whisk, about 2 minutes; remove from heat and stir in mustard, salt, pepper and nutmeg. add cheese mixture to pasta; mix well. tranfer to a 4 quart casserole dish. combine bread crumbs and parmesan cheese; sprinkle over pasta. bake until top is golden, about 30 minutes. yields about 1 cup per serving.