Step 1

In a medium bowl, whisk together the flour, sugar, baking powder, and salt.

Step 2

In a small bowl, whisk together the milk and vanilla extract.

Step 3

Make a well in the center of the dry ingredients, then pour the milk mixture into the center, followed by the melted butter.

Step 4

Whisk until no lumps remain and the batter is smooth and well combined.

Step 5

Pour into a large, microwave-safe mug. Microwave on high for 2 minutes.

Step 6

Top with whipped topping and berries and serve.