Step 1

Preheat your oven to 350F. Butter a 9-inch cake pan or springform pan, and line the bottom with parchment paper. Set aside.

Step 2

On a small baking sheet, toast the 1 cup chopped walnuts in the preheated oven (350F) for about 10 minutes, shaking the pan once or twice during baking to ensure they don't burn. Note: you can also do this on a plate in the microwave on high for 2 minutes.)

Step 3

Meanwhile, in a large mixing bowl, combine the 3 large eggs, 1 cup sugar, 3/4 cup mashed banana , and 1 tsp vanilla extract. Whisk well for about a minute to get everything really well combined.

Step 4

In a separate small bowl, whisk together the 3 cups almond flour, 1 tsp baking powder, 3/4 tsp cinnamon, 1/2 tsp cardamom, 1/4 tsp nutmeg and 1/4 tsp salt.

Step 5

Add the dry ingredients to the wet ingredients and fold together to combine. Fold in the chopped toasted walnuts at the end.

Step 6

Pour the batter into your prepared pan and smooth it out so it's even. Bake for about 45-55 minutes, until the cake is golden brown and set in the middle.

Step 7

Allow to cool for a few minutes in the pan before carefully unmolding.

Step 8

Serve with a sprinkling of powdered sugar and whipped cream, if desired.