Add the peaches, sugar, lemon juice and 1/3 cup very cold water to a blender. Puree until smooth, about 1 minute.
Add 1 ounce of the peach puree to the bottom of a champagne glass. Top off the glass with Prosecco. Serve immediately.
Everything you need to know to select and grill a perfect steak.
50 Quick and Easy Fall Dinners