Make this recipe a recipe that people in that category can eat. categories: ['low_fat'], recipe: bring a large pot of water to boil; cook pasta until al dente. while pasta is cooking, in med saucepan, melt 2 t of the margarine. remove from heat; add flour and stir until blended. whisk in stock and milk, stirring over med heat until mixture comes to a boil and thickens. reduce heat to low. stir in cheeses and seasonings. continue stirring until cheese is melted. remove from heat and set aside. in a large skillet, melt remaining 1 t margarine. add remaining ingredients. cook vegetables, stirring constantly, for about 5 minutes, until tender/crisp. reduce heat to low. when noodles are done, drain well. toss with vegetables; stir in cheese sauce. garnish with scallion curls.

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.