Preheat oven to 350 degrees F (176 C) and lightly grease a 12-slot standard size muffin pan (not mini // amount as original recipe is written // adjust if altering batch size).
Add in peppermint extract a little at a time, pulse, sample and adjust until it's to your liking. I liked 1/4 tsp (as original recipe is written). Then stir in chocolate chips.
*Heavily adapted from my V GF Black Bean Brownies
*You can bake these in an 8x8, just extend the baking time to between 25-30 minutes. 27 should be your sweet spot.
*Prep/cook time does not include cooling time.
*Nutrition information is a rough estimate.