White and Blue Mascarpone-Stuffed Strawberries

1 pint fresh blueberries1 quart fresh strawberries5 oz. mascarpone cheese2 t. lemon zestJuice of 1 lemon3 T. powdered sugar1 t. vanilla1. Wash blueberries, drain and dry with paper towel.2. Wash and hull strawberries, pat dry.3. Slice off bottom of each…