Preheat your oven to 350°F (175°C).

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

Beat in the eggs one at a time, followed by the vanilla extract.

In a separate bowl, whisk together the flour, baking soda, and salt.

Gradually add the dry ingredients to the wet mixture, mixing until just combined.

Gently fold in the rainbow sprinkles.

Using a cookie scoop or tablespoon, drop rounded balls of dough onto a lined baking sheet.

Bake in the preheated oven for 10-12 minutes, or until the edges are lightly golden.