LACTOSE-FREE DOUBLE CHOCOLATE CHIP COOKIE ICE CREAM SANDWICHES: 1 c. lactose-free butter, 3/4 c. granulated sugar, 3/4 c. light brown sugar, 2 eggs, 1 tsp. vanilla, 2 c. AP flour, 1 tbsp. espresso powder, 2/3 c. Dutch process cocoa, 1 tsp. baking soda, 1/2 tsp. Kosher salt, 2 c. lactose-free dark chocolate chunks, 2 (14-oz.) pkg. lactose-free ice cream