Cook gnocchi according to package directions; drain. Meanwhile, in a small saucepan, melt 1 tablespoon butter. Stir in flour until smooth; gradually whisk in milk. Bring to a boil, stirring constantly; cook and stir 1-2 minutes or until thickened. Remove from heat; stir in cheese and nutmeg until blended. Keep warm.
In a large heavy skillet, melt remaining butter over medium heat. Heat 5-7 minutes or until golden brown, stirring constantly. Immediately add mushrooms and gnocchi; cook and stir 4-5 minutes or until mushrooms are tender and gnocchi are lightly browned. Serve with sauce. If desired, sprinkle with parsley.
Look for potato gnocchi in the pasta or frozen foods section.
1 cup gnocchi mixture with 1/3 cup sauce: 529 calories, 14g fat (8g saturated fat), 46mg cholesterol, 996mg sodium, 81g carbohydrate (15g sugars, 5g fiber), 19g protein.