Preheat your oven to 350°F and grease an 8-inch round cake pan with coconut oil spray or line with parchment paper.
Shred the carrot and set aside.
In a large bowl add erythritol, stevia, melted butter, and eggs. Combine using a whisk.
Add in the shredded carrot, almond flour, coconut flour, cinnamon, baking soda, and salt, and combine one more.
Spoon the batter into the greased or parchment lined round 8 inch round cake pan and set aside while you make the topping.
Make the topping by adding all the ingredients to a mixing bowl and combining with a spoon or your hands.
Sprinkle the topping over the batter and bake for 30-35 minutes.
Use a toothpick to test doneness. Allow to cool for 15-20 minutes prior to transferring and slicing.
Best stored in an air tight container int he fridge up to 10 days.