Flourless Brownie + Espresso-Caramel Buttermilk Ice Cream Sandwiches Serves: 9 ice cream sandwiches Ingredients For the Ice Cream 1 1/2 cups heavy whipping cream 1 3/4 cups buttermilk 3/4 cups sugar 5 large egg yolks 1/4 tsp. salt 1 tablespoon instant espresso powder 1/4 cup caramel sauce For the Brownies 6 tablespoons unsalted butter, cubed