In a large mixing bowl or stand mixer bowl, add butter and sugars. Beat on high speed until smooth. Add eggs and vanilla, and stir again until well incorporated.
In a separate bowl, combine dry ingredients. With the mixer running on low, slowly add dry ingredients to wet ingredients. Mix to combine, just until flour is incorporated.
Using a spoon or mixing spatula, fold in white chocolate chips.
Once combined, scoop 1-2 tablespoon-sized balls onto a parchment-lined cookie sheet. Bake for 8-10 minutes, or until the top of cookies is lightly browned.
Allow cookies to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.
Notes
The cookie dough will keep in the fridge for up to 5 days. If frozen in an airtight freezer-safe container, it will keep for up to 3 months. Baked white chocolate cookies may be frozen for up to 3 months as well.
Store cookies in an airtight container at room temperature for up to 1 week.