Step 1

In a medium bowl, mash up the banana with a fork (or I use a pastry cutter).

Step 2

Mix in the melted butter.

Step 3

Crack the egg in this bowl and mix together.

Step 4

Add the almond flour, cinnamon, and baking soda, and stir.

Step 5

Add the optional chocolate chips.

Step 6

Pour the batter into a greased mug or small microwave-proof dish, or 2 small dishes.

Step 7

Microwave on high for 90 seconds for shallower dishes and up to 2 1/2 minutes for a single deeper mug.

Step 8

Stop at 90 seconds and see if it's done; if not,microwave at 30 second intervals (so it doesn't overflow).

Step 9

Enjoy!!!