Chocolate Banana Lunchbox Cake

• 400 oil an (lightly)
• 15 by
• 11 baking (pan)
• 1 in a mixing bowl
• 1 confectioners sugar
• 250 gr sifted cake flour
• 180 ml buttermilk
• 150 gr packed (light)
• 110 gr mashed ripe banana (very)
• 85 gr dark corn syrup