3 cups boiling water
1 1/2 cups milk
1/2 cup butter, cut into pieces
1/2 cup sour cream
8 ounces softened cream cheese
1 teaspoon garlic salt
1/4 teaspoon pepper
4 cups instant mashed potatoes

Spray large crockpot with nonstick cooking spray. Mix together water, milk, butter, sour cream and cream cheese with whisk till blended. Add remaining ingredients and mix just till blended. Cover and cook on Low 1 hour 30 minutes, stirring once after 1 hour. Before serving, stir. Serve immediately or hold in crockpot on Low up to 3 hours, stirring every 30 minutes. If potatoes become too thick, stir in additional milk 2 tablespoons at a time.