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

In a mixing bowl, cream together the softened butter, granulated sugar, and light brown sugar until light and fluffy.

Add the eggs one at a time, mixing well and then add the cake batter extract.

In another bowl, whisk together the flour, baking powder, and salt. Gradually add this to the wet mixture, mixing on low speed.

Fold in the rainbow sprinkles gently to distribute throughout the dough.

Drop 2-3 tablespoons of dough onto prepared baking sheets, leaving space between cookies. Flatten slightly.

Bake for 13-16 minutes for smaller cookies or 18-20 minutes for larger ones until edges are golden.

Cool on baking sheets for 5 minutes before transferring to a wire rack.

For frosting, beat softened butter and powdered sugar, adding cake batter extract and cream for consistency.

Once cookies cool, frost them and add additional sprinkles if desired.