Step 1

Preheat your oven to 350 degrees Fahrenheit. Grease a loaf pan and set aside.

Step 2

In a large bowl, use a fork or potato masher to mash the peeled bananas.

Step 3

Add the butter, sugar substitute, white whole wheat flour, and baking soda.

Step 4

Use an electric mixer on medium speed to mix until combined.

Step 5

Pour into the greased loaf pan.

Step 6

Bake for 50 to 60 minutes. It is done when a toothpick stuck in the center comes out clean. Cool on a cooling rack.