Ranch Turkey Pasta Dinner

2 1/2 cups uncooked penne or medium tube pasta
6 to 8 tablespoons butter or margarine
1 envelope ranch salad dressing mix
1 cup frozen peas and carrots, thawed
3 cups cubed cooked turkey

Cook pasta according to package directions.

Meanwhile, in a large skillet, melt butter. Stir in salad dressing mix until smooth; heat through. Add peas and carrots; cook and stir for 2 to 3 minutes. Drain pasta and add to skillet. Stir in turkey and heat through.