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

In a separate bowl, whisk together the flour, baking powder, and sea salt until well blended.

In a mixing bowl, beat the softened butter with the white and brown sugars until creamy and fluffy, about 3 minutes.

Add the vanilla extract and incorporate the eggs one at a time, mixing well after each addition.

Slowly fold the dry mixture into the wet ingredients until just combined, being careful not to overmix.

Gently stir in the colorful sprinkles and mini chocolate chips if using.

Using a spoon or cookie scoop, place rounded portions of dough onto the prepared baking sheets, leaving about 2 inches between each cookie.

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

Allow the cookies to cool on the sheets for about 5 minutes before transferring them to a wire rack to cool completely.