1/4 cup sugar
1/4 cup cocoa powder
pinch of salt
1/4 cup milk
1/4 cup butter, melted
2 large eggs, lightly beaten
1 tsp vanilla extract
1/4 cup semisweet chocolate chips
In a small mixing bowl stir the flour, sugar, cocoa, and salt together. Add the milk, butter, eggs, and vanilla; stir well to incorporate. Fold in the chocolate chips.
Divide the batter evenly between two microwave safe mugs; sprinkle extra chocolate chips over the tops.
Microwave cups together on high for 2 minutes.
Cake will be very moist and gooey in the centers. Allow to set for 15 minutes before eating.