Preheat your oven to 350°F (175°C) and prepare a baking sheet with parchment paper.

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

Add in the eggs one at a time, mixing well after each addition, then stir in the vanilla extract.

In a separate bowl, whisk together the flour, baking soda, and salt. Gradually mix this into the wet ingredients until just combined.

Gently fold in the Fruity Pebbles and white chocolate chips until evenly distributed.

Using a cookie scoop, portion out 1.5-inch dough balls onto the prepared baking sheet, leaving space for spreading.

Bake in the preheated oven for 10-12 minutes, until edges are golden brown and centers are slightly undercooked.

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