Mix water and mustard in 1-1/2-quart casserole. Whisk in Cheese Sauce from Pouch. Stir in dry pasta; cover with tight fitting lid.
Bake at 375 Degrees F for 30 minutes. Uncover; stir in sour cream. Continue baking, uncovered, 10 minutes. Let stand 5 minutes before serving.
Calories From Fat
% Daily Value*
Total Fat 0g
Saturated Fat 0g
Trans Fat 0g
Dietary Fibers 0g
* Percent Daily Values are based on a 2,000 calorie diet.
* Nutrition information is estimated based on the ingredients and cooking instructions as described in each recipe and is intended to be used for informational purposes only. Please note that nutrition details may vary based on methods of preparation, origin and freshness of ingredients used.