Preheat Oven: Heat it to 350°F (175°C). Prepare a 9-inch round cake pan with a bit of grease or parchment paper.
Combine Dry Ingredients: In a large bowl, mix 1 1/2 cups almond flour, 1/2 cup coconut flour, 1 tsp baking powder, 1/2 tsp baking soda, 1/2 tsp cinnamon, 1/4 tsp nutmeg, 1/4 tsp ginger, and 1/4 tsp salt.
Mix Wet Ingredients: In a separate bowl, whisk together 1 cup pumpkin puree, 1/2 cup maple syrup, 1/4 cup melted coconut oil, and 3 large eggs.
Blend Wet and Dry: Combine the wet ingredients with the dry mixture. Stir until everything is just blended.
Prepare Streusel: In a small bowl, mix 1/4 cup almond flour, 2 tbsp coconut sugar, 2 tbsp melted coconut oil, and 1/4 tsp cinnamon.
Assemble Cake: Pour the batter into the prepared cake pan and evenly spread. Sprinkle the streusel topping over the top.
Bake: Place in the oven and bake for 45 minutes, or until a toothpick inserted into the center comes out clean.
Cool and Serve: Allow the cake to cool in the pan for 10 minutes before transferring to a wire rack. Slice and enjoy!