1. Heat oven to 350°F. Spray a 13"x9" baking dish with no-stick cooking spray. Heat water, butter, garlic salt and onion salt to boiling in a 6-quart Dutch Oven or saucepan. Remove from heat. Add cream cheese, evaporated milk and sour cream, stirring until cream cheese is dissolved.
2. Stir in potato flakes, mixing until all ingredients are well combined. Spread mashed potato mixture into prepared pan.
3. Sprinkle with paprika and bake 1 hour or until bubbling around the edges and golden brown. Top with chopped bacon and parsley, if desired.
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