Preheat your oven to 350°F (175°C).

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

Add the egg and vanilla extract, mixing well to combine.

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

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

Fold in the colorful sprinkles, ensuring even distribution.

Scoop tablespoon-sized balls of dough onto a lined baking sheet, spacing them about 2 inches apart.

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

Remove from the oven and let the cookies cool on the baking sheet for 5 minutes.

Transfer to wire racks to cool completely.