01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, baking soda, and salt until well blended. Set aside.
03 - Beat softened butter with granulated sugar and brown sugar in a large mixing bowl until light and fluffy, approximately 2–3 minutes.
04 - Add eggs one at a time, beating thoroughly after each addition. Mix in vanilla extract until incorporated.
05 - Gradually add dry ingredients to wet mixture, mixing until just combined. Do not overmix.
06 - Gently fold in sprinkles and white chocolate chips with a spatula until evenly distributed throughout the dough.
07 - Drop tablespoon-sized balls of dough onto prepared baking sheets, leaving approximately 2 inches of space between each cookie.
08 - Bake for 9–11 minutes until edges are set and centers appear slightly underbaked.
09 - Let cookies rest on baking sheets for 5 minutes, then transfer to wire rack to cool completely.