In a large microwave-safe mug, whisk together flour, brown sugar, granulated sugar, baking powder, and a pinch of salt.

Add milk, vegetable oil, and vanilla extract to the mug. Stir until the batter is smooth, ensuring there are no dry pockets.

Microwave on high for 60 seconds. Check if the pancake is cooked through, if not, microwave for an additional 10-20 seconds.

Carefully remove the mug from the microwave. Top with butter and maple syrup or other toppings like fresh fruit.