1/4cupall purpose flourI use Bob's Red Mill Organic All-Purpose Flour
1Tsp.baking powder
2Tbsp.cocoa powder
1Tsp.instant espresso powder
1/4cupchocolate chunks
Instructions
In a small microwave safe bowl, melt the butter.
Add the vanilla, milk and egg to the butter and whisk to combine.
Stir in the sugar, flour, baking powder, cocoa powder and espresso powder.
Divide the batter between two 8 ounce mugs filling no more than halfway in each mug. (overfilling will result in a huge mess.)
Sprinkle the batter with chocolate chunks.
Place the mugs in the microwave and bake at full power for 1 minute 30 seconds. The cake should spring back when pressed lightly with your finger. If the cake is undercooked, cook for an additional 15 seconds until cooked through.