Blueberry Crunch Cake

• 2 tbs all purpose flour
• 2 tbp granulated sugar
• 120 ml low-fat buttermilk
• 60 gr cornmeal (yellow)
• 60 gr egg substitute
• 5 gr baking powder
• 5 ml canola oil
• 4 gr vanilla extract
• 4 gr confectioners sugar
• 1 gr salt