- STEP 1
Microwave the butter until melted on full power in a large microwave safe mug
- STEP 2
Add the egg to the melted butter and whisk together with a fork
- STEP 3
Add the coco powder, flour and caster sugar
- STEP 4
Whisk the mixture together well with a fork
- STEP 5
Cook in the microwave on full power for 2 minutes or until liquid round the edges has gone
- STEP 6
Tip out into a bowl and leave to cool before eating