Combine all ingredients into an oversized microwave-safe mug. Mix with a small whisk until batter is smooth. Cook in microwave for about 1 minute. If cake is not cooked in one minute, add an additional 20 seconds. Let cake cool a few minutes in the mug before eating.
Notes
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The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.