2 1/3 cups all purpose flour 1 cup brown sugar 1/2 cup sugar 1 egg, beaten 1 egg yolk 1 tsp baking soda 1 tbsp corn starch 1 tsp salt 1 tbsp vanilla 3/4 cup unsalted butter (room temp/melted) 1 cup chocolate chips
Preheat oven at 325.
Cream sugars and butter in one bowl, then add vanilla and eggs. Mix dry ingredients in another. Add dry mix to larger bowl along with chocolate chips.
Spray baking sheet with oil and bake for 12 minutes.