2 cups water
1 (6 ounce) can cherry pie filling
1 (10 ounce) can frozen whipped topping, thawed
2 tablespoons butter
1 tablespoon lemon juice
In a saucepan, bring water and pie filling to a boil. Reduce heat, cover and simmer for 5 minutes.
In a small bowl, mix together whipped topping, butter, lemon juice and water until well blended. Spread over pie and serve.