Gingerbread Protein Mug Cake

1. Whisk the flour, brown sugar, baking powder, spices and salt in a microwave-safe mug. Add the melted butter and ½ cup of BOOST Advanced Vanilla, stirring until smooth.
2. Microwave on high for 60 to 75 seconds, or until a toothpick inserted in the center comes out clean. If the center isn’t set, continue microwaving in 10-second bursts until cooked through. Let the mug cake stand for one minute before serving.
3. If desired, top with extra cinnamon, whipped cream and sprinkles.

Notes
For a stronger gingerbread flavor, use 1 tablespoon of brown sugar instead of two, and add 1 tablespoon molasses to the batter.