Sourdough Discard Blondies 2 sticks unsalted butter (melted) 1 cup brown sugar 1 cup white sugar 1 cup sourdough discard 2 eggs plus 1 egg yolk 2 tsp vanilla 3 cups all purpose flour 1 tsp baking soda 1/2 tsp baking powder 1 tsp salt 2 tsp corn starch Mix wet ingredients set aside Mix dry ingredients Combine wet & dry Add in chocolate chips as many as your heart desires I use an entire bag Spread in greased 9x13 pan Bake at 350 for 40-45 mins Enjoy!