Step 1

In medium bowl, mix together dry ingredients (almond flour, coconut flour, xanthan gum, salt, stevia, erythritol, and baking powder).

Step 2

Set aside.

Step 3

Add mashed banana, butter, coconut oil, eggs, and vanilla extract into a food processor.

Step 4

Process until well blended. Add dry ingredients and process until uniform batter is formed.

Step 5

Mix in chopped walnuts.

Step 6

Pour batter into a greased 9×5 inch loaf pan.

Step 7

Bake at 325F and start checking for doneness after a half hour. Remove from oven when top is browned and toothpick inserted comes out dry. This could take anywhere from a half hour to 70 minutes depending on pan size and oven.