Whisk together in a bowl flour, baking soda and salt, set aside

In a large bowl beat butter and both sugars until light and fluffy about 2 minutes

Add egg, egg yolk and vanilla and beat in.

Add flour mixture and stir until well blended but don't overmix

Fold in holiday chips and kit kat bars being careful not to break up kit kat bars

Roll dough into 1 1/2 inche balls, press top lightly to flatten slightly, place 2 inches apart on preparedcpans

Bake for 13 to 15 minutes until light golden. Don't overcook for chewy cookies, they should look soft, they will firm uo when cool.cool 5 minute on pan r then transfer to a wire rack to cool completely