Preheat oven to 350°F. Line two baking sheets with parchment.
Cream softened butter, granulated sugar, and brown sugar until light and fluffy, about 2 minutes.
Beat in eggs and vanilla until smooth, scraping the bowl once.
Whisk flour, baking soda, salt, and cornstarch in a separate bowl.
Add dry ingredients to the wet mixture on low speed just until combined.
Fold in white chocolate chips by hand until evenly dispersed.
Scoop dough into 1.5-tbsp mounds and set 2 inches apart on sheets.
Bake 9–11 minutes, until edges are set and centers look slightly pale.
Cool 5 minutes on the sheet, then transfer to a rack to finish cooling.
Notes
For thicker cookies, chill the scooped dough 30–60 minutes before baking. Try stirring in a handful of chopped macadamias or a teaspoon of orange zest for a bright twist. Store in an airtight container at room temperature for 3–4 days or freeze baked cookies up to 2 months.This recipe is an original creation inspired by classic Easy White Chocolate Chip Cookies flavors. All ingredient ratios and instructions are independently developed.