Step 1

Preheat oven to 350 degrees. Spray a 24-cup mini muffin pan with nonstick spray.

Step 2

In a large bowl, combine both types of flour, protein powder, cocoa powder, sweetener, baking powder, baking soda, and salt. Mix well.

Step 3

In a medium microwave-safe bowl, microwave butter for 15 seconds, or until melted. Add all remaining ingredients except chocolate chips. Mix until smooth and uniform.

Step 4

Add mixture in the medium bowl to the large bowl. Mix until uniform.

Step 5

Evenly distribute batter into the muffin pan, and smooth out the tops.

Step 6

Sprinkle with chocolate chips, and lightly press to adhere. Bake until a toothpick inserted into the center of a popper comes out clean, about 10 minutes.