Preheat your oven to 350°F (175°C) and line a mini muffin tin with paper liners.

In a medium bowl, combine flour, sugar, baking powder, and salt. Whisk until well blended.

In a separate bowl, whisk together milk, egg, melted butter, vanilla extract, and cotton candy flavoring until smooth.

Gradually pour the wet mixture into the dry ingredients, folding gently until combined.

Divide the batter into two bowls. Add pink food coloring to one and blue to the other, mixing gently.

Alternate spoonfuls of pink and blue batter into the muffin cups for a swirling effect.

Bake for 10-12 minutes until a toothpick comes out clean. Allow to cool in the pan for 5 minutes.

Transfer to a wire rack to cool completely.

Optionally top with whipped frosting and cotton candy pieces before serving.