Preheat oven to 375 degrees F. Lightly grease an 8 inch square cake pan.
In a medium bowl, combine flour, cornmeal, sugar, baking powder and salt; set aside.
In another bowl, whisk together eggs, buttermilk and butter. Add to the dry ingredients and stir just until moistened. Gently stir in berries.
Spread level in prepared baking pan.
Bake 22-24 minutes or until a toothpick inserted in the center comes out clean. Cut into squares or wedges. Serve warm. Let cool 10 minutes, then cut into 9 squares.