1 1/2 cupsdark brown sugarlight brown sugar can be used as well
2whole eggs
1egg yolk
1tsppure vanilla extract
2 1/2cupspeeled and diced apples2-3 apples depending on size
caramel frosting
3tbspbutter
1/2cupbrown sugar
1/4tspsalt
3tbsphalf and half or milk
1/2 tsppure vanilla extract
2cupspowdered sugar
Instructions
Preheat oven to 350 degrees and grease a 8x8 cake pan and line with parchment paper
In a medium bowl sift together flour, cornstarch, baking powder, salt and spices. Set aside.
Peel apples and cut into small cubes. Set aside.
In a large bowl add oil, and brown sugar whisk until smooth.
Whisk in both eggs + 1 egg yolk, vanilla. Whisk until smooth and fluffy. This step can be done by hand or with a stand or hand mixer.
Add dry ingredients to the wet ingredients using a spatula stir together, scraping down sides of the bowl.
Fold in apples. And scrape batter into prepared pan, the batter is thick so smooth it into the corners.
Bake at 350 degrees for 20 minutes, until just barely brown. Prick with a toothpick, it should come out clean. Remove from oven and make caramel frosting.
Caramel frosting
Melt butter on stove top in a small sauce pan, add brown sugar and whisk until smooth, bring to a low boil, cook for 2 minutes. Sprinkle in salt, whisk in half and half and then add vanilla, remove from heat and continue to whisk until smooth like caramel. Add powdered sugar and whisk again until smooth.
Lift cake out of pan by pulling it out with parchment paper. Set on a platter or cake plate and pour warm frosting over top smoothing it out on the top and letting it drip down the sides.