If not serving immediately store in a sealed container in the refrigerator.
Will keep for a couple of days depending how fresh the ricotta was when you purchased it.
Delicious also spread on toasted panettone or pandoro and top with a spoonful of fruit preserves.
Make a dessert pizza by spreading on a cooked plain pizza base and topping with fresh fruit or fruit preserves. Return to a hot oven for a few minutes to heat through.