Step 1

Preheat oven to 400 degrees and line a 12 cup muffin tin with paper liners or spray with non-stick spray.

Step 2

In a large bowl, whisk or sift together the flour, cocoa powder, xanthan gum, sugar, baking powder, baking soda, and salt. Stir in the chocolate chips.

Step 3

Add the eggs, buttermilk, oil, and vanilla extract to a medium bowl and whisk together. Pour the wet ingredients into the dry ingredients and mix until completely combined.

Step 4

Scoop the batter into the prepared muffins tins, dividing the batter evenly between the 12 cups and then smooth out the tops of the muffins as best you can. Sprinkle the muffins with additional chocolate chips and gently press into the batter, if desired.

Step 5

Bake at 400 degrees for 15-18 minutes or until a toothpick comes out clean. Cool in the pan for 5 minutes then remove from the pan and cool on a wire rack.