In a medium sized bowl, add in flour, rolled oats, cornstarch, cinnamon, cloves, allspice, nutmeg, baking powder, baking soda, and salt. Stir to combine and set aside.
1 1/2 cups all-purpose flour, 3/4 cups rolled oats, 3/4 tsp baking powder, 3/4 tsp baking soda, 1 1/2 tsp cornstarch, 1/4 tsp salt, 1 tsp cinnamon, Dash of allspice, Dash of cloves, Dash of nutmeg
In a large bowl, add oil, brown sugar, eggs, vanilla, and applesauce. Whisk for 2-3 minutes until it's well combined. Make sure to scrap the sides of the bowl.
1/2 cup oil, 3/4 cups unsweetened applesauce*, 3/4 cups light brown sugar, 1 tbsp vanilla, 2 large eggs
Mix in the dry ingredients and using a spatula, gently fold until a batter forms. Do not over-mix!
Add the apples into the bowl. Gently mix until JUST combined, don't over-mix!
1 medium-sized Granny Smith apple*, 1 medium-sized Granny Smith apple
Spread the batter into the prepared pan evenly. In a small cup, add white sugar and cinnamon and mix together. Then sprinkle on top evenly. This will give you a sweet crunchy top.
3 tsp white sugar, 1/4 tsp cinnamon
Bake for 40-50 minutes, depending on your oven. It took me 48 minutes exactly. Allow it to cool, slice, and enjoy!
This cake is best enjoyed fresh day of and next day. Store in an airtight container for 3 days on your counter, or up to a week in the fridge.