Tortellini in Parmesan Cheese Sauce

1 (16 oz.) pkg. frozen cheese tortellini

1 recipe Medium White Sauce
1/2 C. grated Parmesan or Romano cheese
2 T. chopped fresh parsley (optional)

Cook tortellini according to package directions; drain. Meanwhile, make the Medium white sauce. When it has thickened, add the cheese. Cook and stir until well blended.

Pour over tortellini; stir gently. If desired, sprinkle with parsley. Serve with extra cheese on the side.