Place the gluten free flour blend, sugar, cocoa powder, and baking soda in a small mug. Stir to combine.
Add the melted vegan buttery spread, water, and vinegar. Stir again.
Sprinkle dairy free chocolate chips on top of the batter.
Microwave for 60-70 seconds on 70% power. (You may have to experiment - every microwave is a little different!)
Let cool for a few minutes before eating.
Top with dairy free ice cream, whipped topping, or berries if desired.
Notes
⅙ of a teaspoon is the correct amount for the baking soda. If you have a ⅓ teaspoon measure, just use half of that. Or if you have ¼ teaspoon, just use a little less than that.Nutrition information is for the cake, without any ice cream or whipped topping on it.