Last minute recipe request! Secret ingredient: champagne.

Hi! We have a dozen or so bottles of wedding champagne to get rid of somehow and were thinking of a nice, easy day-drinking champagne-based cocktail for a party we're hosting.What's your best crowd-pleasing recipe where we could use all this stuff? It's decent tasting Trader Joe's brut. http://www.reddit.com/r/cocktails/comments/3eh27i/last_minute_recipe_request_secret_ingredient/