2 tablespoons unsalted butter
¼ cup Nutella
1 large egg
2 tablespoons milk
1 teaspoon pure vanilla extract
3 tablespoons granulated sugar
6 tablespoons (¼ cup plus 2 tablespoons) self-rising flour
Pinch of kosher salt
¼ cup chopped hazelnuts preferably toasted (optional)
In a large mug, combine the butter and Nutella.
Microwave for 20 to 30 seconds until melted.Whisk in the egg with a fork. Stir in the milk, vanilla, and sugar. Add the flour and salt. Beat the batter until smooth. Fold in the hazelnuts.
Divide the batter between two mugs. Microwave separately for 1½ to 2½ minutes each until risen and firm.
Topping Ideas: Whipped cream, Nutella, Marshmallow Fluff, milk chocolate ganache, caramel sauce, confectioners’ sugar, chopped hazelnuts, or fresh raspberries.