Preheat the oven to 350°F (175°C).

In a bowl, combine the all-purpose flour, baking soda, and salt. Whisk together until well blended.

In a separate large bowl, cream the softened butter, granulated sugar, and brown sugar together using an electric mixer until light and fluffy (about 2-3 minutes).

Beat in the eggs one at a time, followed by the vanilla extract. Continue mixing until well incorporated.

Gradually add the dry mixture to the wet mixture, blending on low speed just until combined. Be careful not to overmix!

Gently fold in the rainbow sprinkles until just dispersed throughout the dough.

Using a cookie scoop or tablespoon, drop the dough onto a baking sheet lined with parchment paper, leaving about two inches between each cookie.

Bake in the preheated oven for 10-12 minutes, or until the edges begin to turn golden. The centers might look slightly undercooked.

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