Instructions: Cook pasta according to package directions, until al dente (firm). While pasta is cooking, in medium saucepan, melt 2 Tbsp. of the margarine. Remove from heat, then add flour and stir until blended in. Whisk in stock and milk, stirring over medium 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 Tbsp margarine. Add remaining ingredients. Cook vegetables, stirring constantly, for about 5 minutes, until tender/crisp. Reduce heat to low. When noodles are done, drain. Toss with vegetables and stir in cheese sauce. Garnish with scallion curls if desired.

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