preheat the oven to 350°F (175°C) and grease two 8-inch cake pans with coconut oil or line them with parchment paper.
in a large bowl, whisk together all the dry ingredients: oat flour, almond flour, cornstarch, baking powder, baking soda, pumpkin spice, and salt.
in a separate bowl, mix the wet ingredients: pumpkin puree, almond butter, maple syrup, melted coconut oil, dairy-free milk, vanilla extract, and apple cider vinegar.
pour the wet ingredients into the dry ingredients and gently mix until combined. do not overmix.
add in the rolled oats and gently fold in. evenly divide the batter between the two prepared 8-inch pans.
bake for 32 minutes or until a toothpick inserted into the center comes out clean. let the cakes cool completely in the pans before removing them.