Step 1

In a microwave/oven-safe mug or ramekin, mix the flour, sugar, and baking powder to remove any lumps.I used a mug with a diameter of 4 inches/10 cm (the volume is about 1 cup/0.25l).

Step 2

Add the remainder of the ingredients (except the blueberries) and mix well. You can first mix the wet ingredients in a separate bowl, but it's not 100% necessary.

Step 3

Add the berries and mix to combine.

Step 4

Microwave on high for 1.5 minutes (my microwave is 900W - you'll need to increase/decrease this time slightly based on your own micro). Allow it to cool slightly and then enjoy immediately!

Step 5

I haven't personally tried to bake this berry mug cake mix, however, there's no reason why it shouldn't work.Simply ensure that the batter is in an oven-safe ramekin/dish. Then, bake in the oven at 180ºC/350ºF for between 12-15 minutes. You can check to make sure that it is cooked through with a toothpick or skewer. I’d suggest watching it quite carefully after the 10-minute mark, though, as over-baked mug cake isn’t great. The timing may be slightly off too, as it's just an educated guess.