• 2 tablespoons unsalted butter
• 1/4 cup dark chocolate chips
• 1 large egg
• 3 1/2 tablespoons buttermilk
• 1/4 teaspoon vanilla
• 1/4 cup sugar
• 2 tablespoons unsweetened cocoa powder
• 2 tablespoons self-rising flour
• pinch of salt

Directions

1. Combine the butter and chocolate chips in a large mug. Microwave for 30 to 60 seconds until melted. Add the egg and whisk it in with a fork. Stir in the buttermilk, vanilla, sugar and cocoa. Add the flour and salt. Beat the batter until smooth. Divide between 2 mugs. Microwave separately for 1 to 2.5 minutes each until risen and firm. Topping ideas: whipped cream, fresh berries or shaved chocolate. Serve immediately.