1 package (16 ounces) cheese- or beef-filled tortellini
2 tablespoons butter
3 tablespoons all-purpose flour
2 cups low-fat milk
1 teaspoon Worcestershire sauce
1/4 teaspoon salt
1/3 cup dry bread crumbs
1/3 cup grated Parmesan cheese
While pasta is cooking, prepare sauce. In small saucepan, melt butter over medium heat. Add flour and stir constantly for 1 minute, until a smooth paste forms. Slowly add milk, whisking with a wire whisk until smooth. Cook 3 to 4 minutes, until sauce bubbles and thickens. Stir in Worcestershire sauce and salt. Remove from heat.
Drain pasta and return to pot. Toss with white sauce and transfer to prepared casserole; sprinkle with bread crumbs and cheese. Bake 5 to 10 minutes, or until top is golden brown. Let stand 5 minutes before serving.
Per Serving: cal. (kcal) 510, Fat, total (g) 18, chol. (mg) 75, carb. (g) 65, pro. (g) 22, sodium (mg) 796, Percent Daily Values are based on a 2,000 calorie diet