Take one coffe/tea mug .
Add 3 tbsp flour, 1 tsp coco powder, ⅛ Baking powder, 2 tbsp sugar OR u can use condensed milk instead of sugar, a pinch of baking soda and salt.
Mix it well all ingredients. Add 2 tsp butter and 4 tbsp milk in that mix.
Start oven for prehit. Mix all things well batter is ready now. After prehit oven put mug in it and microwave for 5-7 minutes.
Your chocolate cup cake is ready. Now dressil chocolate syrup on it and enjoy .
As u can see in photo I made three chocolate mug cakes .