Note: If you’re making one big mug cake, mix this all in your mug. If you’re making two servings, mix it in a separate bowl and then divide between the two mugs.
Place the butter in a medium bowl and melt it in the microwave for 30 seconds.
Add the coconut sugar, egg and vanilla to the bowl. Whisk until combined.
Add the almond flour, baking soda, and salt. Whisk until combined.
Fold in most of the chocolate chips, saving a few to sprinkle on the top of each mug.
Divide the batter into two mugs. Sprinkle the remaining chocolate chips on top.
Microwave separately, each for 40 seconds.
Enjoy as is or top with a scoop of vanilla ice cream.