Step 1: Preheat the Oven: Preheat your oven to 350°F (175°C).
Step 2: Cream the Butter and Sugar: In a large mixing bowl, cream the softened butter and granulated sugar until light and fluffy, about 2-3 minutes.
Step 3: Add Egg and Vanilla: Add the egg and vanilla extract to the mixture and beat until well combined.
Step 4: Combine Dry Ingredients: In a separate bowl, whisk together the flour, baking soda, baking powder, and salt.
Step 5: Mix Dry Ingredients into Wet: Gradually add the dry ingredients to the wet mixture, mixing until just combined.
Step 6: Fold in Funfetti and White Chocolate Chips: Gently fold in the funfetti sprinkles and white chocolate chips.
Step 7: Scoop and Bake: Using a cookie scoop, drop rounded tablespoons of dough onto a baking sheet, spacing them 2 inches apart. Bake for 10-12 minutes.
Step 8: Cool and Enjoy: Let cookies cool on the baking sheet for 5 minutes before transferring to a cooling rack.