Grease a coffee mug with oil or butter. Place all ingredients in mug and mix with fork to combine ingredients, but don’t over-mix. Microwave on high for 1 minute and 30 seconds. The cake might look like it is overflowing from mug, but it will settle. Cooking time depends on microwave strength, but the standard is 1 minute and 30 seconds; with 3 minutes being on the higher end. Final product should be moist.
Notes
Note: If using a homemade flour blend, make sure the blend contains baking powder and salt.
If you prefer to use the oven then this recipe still works well. Cook on 180 degrees C for 10 minutes or until skewer comes out clean. Make sure you grease the mug well.