You are here: Home » Recipes » Fiesta Potato Casserole Fiesta Potato Casserole Recipe by Relish ContributorKitchen Tested Yield 10 servings This recipes takes mashed potatoes to another level. PrintEmail Ingredients 3 pounds baking potatoes (about 8 to 10), peeled and quartered2 tablespoons (1/4 stick) light stick margarine1 (8-ounce) package nonfat cream cheese, softened1/2 cup shredded reduced-fat Cheddar cheese1/2 cup finely chopped green bell pepper1/2 cup finely chopped red bell pepper1/2 cup grated Parmesan cheese1/2 cup skim milk Salt and pepper to taste Instructions Preheat oven to 350F. Spray a large nonstick baking dish with cooking spray. Boil potatoes in a large saucepan for 15-20 minutes, or until tender. Drain and mash the potatoes, then add margarine and cream cheese and mix on medium speed until smooth. Add cheddar cheese, green and red peppers, Parmesan cheese, milk, and salt and pepper. Place mixture in baking dish and bake 30-40 minutes until cheese is bubbly.