Preheat the oven to 350° F.
Combine the oat flour, ground flaxseed, cinnamon, pumpkin pie spice, baking powder, and baking soda in a large mixing bowl.
Make a well in the center of the bowl, then add in the nut milk, canned pumpkin, and pure maple syrup.
Mix all wet ingredients well to combine, then slowly mix the wet into the dry to form a smooth cake batter.
Gently fold in the chocolate chips, reserving some to top your mini cakes with as desired.
Distribute the batter evenly between 5-6 ramekins or miniature cake pans.
Top each mini cake with a few more chocolate chips.
Bake the mini cakes for about 30 minutes, or until a toothpick inserted comes out clean.
Let the mini cakes cool completely before removing them from the pans (if using ramekins, you can eat them straight out of the ramekins once they've cooled off a bit).
Dig in and enjoy!