You should the form 9 x 13 foil to bed covers and sides. Then you should grease the top of the foil with butter so it’s easier to get the cookies out when they’re ready.
Melt butter, ina large bowl beat butter sugar and brown sugar until smooth. When the mixture becomes homogeneous. Add eggs, yolk, and vanilla, stir the mixture again.
Connect flour, salt, sugar, then begin to combine this dry mix with the wet mix. When you combine a half, begin to add chocolate chips. Mix all ingredients before uniformity.
Shape the dough into an even thick layer.
Preheat at the oven to 325 degrees and bake for 20-25 minutes until ready.
Allow some time to cool then cut into pieces.
