Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper.

In a medium bowl, whisk together the all-purpose flour, baking soda, and salt until well combined.

In a large mixing bowl, beat the softened unsalted butter, granulated sugar, and brown sugar on medium speed for about 2-3 minutes.

Incorporate the large egg and cotton candy flavoring into the butter-sugar mixture and mix until combined.

Gradually add the dry ingredient mixture to the wet ingredients, stirring gently until just combined.

If desired, fold in sprinkles gently without breaking them.

Using a tablespoon-sized scoop, drop portions of cookie dough onto the prepared baking sheets, spaced about 2 inches apart.

Bake for 10-12 minutes, or until the edges are golden and centers remain soft.

Cool on baking sheets for about 5 minutes, then transfer to a wire rack to cool completely.