Preheat oven to 350° F (177° C).

Line a 8" x 8” casserole dish or baking sheet with parchment paper. Spray or grease the parchment paper and any exposed sides of the pan.

In a medium mixing bowl, combine all the dry ingredients including the banana until well mixed.

In a larger mixing bowl, combine starter, honey, and vanilla. Add the dry ingredients to the bowl and mix until evenly incorporated.

Spread the mixture into prepared pan and press with spatula or back of wooden spoon until evenly distributed.

Bake for 30-35 minutes, or until lightly toasted and golden brown around the edges.

Cool on wire rack for 30-45 minutes. Cut into bars or squares and store in an air-tight container, separating layers with fresh parchment paper.

ENJOY!