Instructions
Preheat oven to 350 degrees. Prepare a cookie rimmed baking sheet W, 15 1/4" L x 10 1/4" W and line with parchment paper or tin foil and spray with cooking non-stick spray.
In a large mixing bowl, cream together softened butter, brown sugar, and sugar for 2 minutes.
Add eggs, one at a time, mixing well after each one. Mix in the vanilla extract.
Stir in flours, cornstarch, baking soda, and salt. Mix until just combined to avoid over-mixing. Stir in white chocolate chips, cadbury eggs and sprinkles.
Place dough onto cookie rimmed sheet and spread out with fingertips to edges of pan. Add some cadbury eggs on top if you want some extra color.
Bake for 18-22 minutes or until golden brown on the top, but do not over-bake. The cookies bars will continue to bake.. Add extra sprinkles and chocolate chips to the top immediately afterwards if you want extra color as well.
Let them set before cutting.
Store in air-tight container or bag.