
Mix the egg vigorously in the bottom of your mug. Add the honey, vanilla, milk, almond flour, baking powder, and melted butter, preferably in that order.
Stir everything together until all ingredients are well-blended and you have a smooth, even batter.
Sprinkle in the chocolate chips and stir the cake batter again until they're well distributed.
Microwave on high for one minute, fifty seconds. Pull the cake back from the side of the mug to check that it's cooked all the way down to the bottom of the mug. If you see some uncooked batter remaining, microwave for an additional 20-30 seconds. Dig in and enjoy!
Store any unused portions in an airtight container in the refrigerator (or just put plastic wrap over the mug) for up to a few days.