Maple Apple Upside Down Cake

• Preheat the oven at 170ºC/340ºF conventional oven and grease a 20 cm baking pan with butter and line the bottom of the pan with parchment paper .
• Start by browning the butter, over medium heat in a frying pan. Once browned, pour it into a medium sized mixing bowl and let it cool down, while preparing the other ingredients.
  75 g butter
• Cut the apples into thin 2 mm/ ⅛ inch slices. Lay the apple slices in a pattern in the baking pan.
  1-2 red apples
• Then in a small saucepan, melt together the maple syrup and butter, until combined. Then let it boil for 2 minutes on medium/high heat.
  55 g butter, 115 g maple syrup
• Pour the caramel over the apples and set it aside while making the cake.
• Sift together the all-purpose flour, cornstarch, cinnamon, baking powder, baking soda and salt and set it aside.
  110 g all-purpose flour, 1 teaspoon ground cinnamon, 1 tablespoon cornstarch, ¼ teaspoon baking powder, ¼ teaspoon baking soda, ¼ teaspoon salt
• In the bowl with the brown butter, add the granulated sugar and mix it together with a hand whisk until combined.
  100 g granulated sugar
• Add the egg and mix it in until combined.
  1 large eggs
• Continue by adding half the dry ingredients and mix until just combined.
• Then add the sour cream, vegetable oil and vanilla extract and mix until just combined. Then add the other half of the dry ingredients and mix until combined.
  75 g sour cream, 20 g vegetable oil, ½ teaspoon vanilla extract
• Using a rubber spatula, give the batter a gentle fold to make sure all of the ingredients have combined.
• Pour the cake batter on top of the apples and even it out. Bake for 24-26 minutes or until a cake tester comes out clean.
• Let the cake cool on a cooling rack for 20 minutes on the kitchen counter. Then drag a knife a long the edge of that baking pan. Place a serving plate on top of the baking pan and flip the cake onto a serving plate.
• It can be enjoyed warm, but it will be harder to cut. Otherwise allow the cake to cool down completely. Optionally serve it with a dollop of whipped cream.