Sift together your dry ingredients (flour, salt, baking soda). In the bowl of a stand mixer, mix together the unsalted room temp butter, 1/4 cup sugar, 3/4 cup brown sugar, 1 tbs vanilla extract, 1 egg, and 1 egg yolk until smooth. Once smooth, fold in your dry ingredients along with 2 bars of cut-up chocolate (reserving a little to sprinkle on top before baking). Press the mixture flat into an oiled 10-inch skillet and bake for 25 minutes at 350°F. Bring out and allow to sit for at least 15 minutes or longer if you want it to firm up. Finish with whatever toppings you want and enjoy!
