Combine the flour, cornmeal, sugar, baking powder, and salt in a large bowl. Use a pastry cutter or the backs of two forks to cut the butter into the dry ingredients until pea-sized clumps form. Add the heavy whipping cream and stir together until a dry dough comes together. Use a medium cookie scoop or your hands to make little flat rounds of dough to place directly on top of the fruit in the baking dish. Sprinkle with a little extract sugar and baking in the preheat oven for about 35 minutes, or until the topping is golden and the fruit underneath is bubbling. Allow to cool slightly before serving with a scoop of ice cream.