Puree strawberries in a blender or food processor.
Strain through a sieve.
Save pulp for using in smoothies or for a sauce to serve over ice cream.
In a blender blend together strained strawberry juice, powdered sugar and strawberry moscato until smooth.
Chill in the refrigerator for a half hour to an hour.
Pour the strawberry mixture evenly among 4 champagne flute glasses.
Top each with 1/2 c. champagne or prosseco.
Serve with chocolates and dainty cookies.