Instructions

1. Preheat toaster oven to 300 degrees. Line the bottom of a 5 x 7 baking dish with parchment paper and lightly spray the dish with oil.
2. In a medium bowl, whisk together the flour, baking soda, baking powder, and salt.
3. In a large bowl, whisk together the butter, sugar, sour cream, and egg, about 2 minutes. Stir in the vanilla and lemon juice.
4. Slowly add the dry ingredients to the wet ingredient until just combined.
5. Dice the apples and sprinkle with the cinnamon then fold the apples into the batter.
6. Pour the batter into the prepared pan and tap the pan to even out the batter.
7. Bake on the lower rack of a toaster oven for 45 minutes or until a cake tester inserted into the center comes out clean.
8. Remove from the oven and let cool before removing from pan.
9. Remove from pan and lightly dust with the confectioner sugar.
10. Slice into four smaller or four larger servings.