Melon and Apple Berry Crumble

Name: Melon and Apple Berry Crumble
Ingredients: 4 large Granny Smith apples - peeled, cored and roughly chopped; 3 tablespoons superfine sugar; 2 cups granola cereal; 2 cups pound cake or angel food cake, crumbled; 1/4 cup all-purpose flour; 1/3 cup brown sugar; 1/4 teaspoon ground cinnamon; 5 tablespoons butter, chopped into chunks and softened; 1 small honeydew melon, rind and seeds removed, and diced small; 1 cup fresh berries (blackberries, raspberries or blueberries); 1 lemon, juiced; 1 pint vanilla ice cream