Dollop 7 individual heaping tablespoons of Nutella or hazelnut spread on parchment paper, freeze 4 hours.
Pre-heat oven to 350 degrees F. Line a standard muffin pan with cupcake liners, or grease each cup with spray.
In a large bowl, beat eggs. Add brown sugar, whisk well together.
Add oil, honey, pumpkin puree, milk, and vanilla. Whisk to combine.
Sprinkle in pumpkin pie spice, cinnamon, allspice, and nutmeg.
Add oat flour, almond flour, and baking powder. Fold to combine.
Scoop out mixture evenly into 7 cups, each should be almost all the way filled.
Place 1 piece of frozen Nutella or hazelnut spread in the center of each one. Using the back of a spoon, spread muffin mixture over the tops of each one to cover.
Bake 12 minutes.
Remove from oven. Let rest in muffin pan for 1-2 minutes.
Remove and place onto cooling rack. Enjoy warm or room temperature.
Store in an airtight container.