Cost information for the following is not included. Normally this is because the quantity or ingredient is unknown
  Flour. In a small saucepan, heat 3/4 pound butter and fold in
  VERY LARGE BAKING PAN (larger than 9x13"). Pour in mix and
  Cold and frost.
  Note: It has been a while since I have made these but as I
  Recall, the cooking time wasn't long sufficient so you may need
  To adjust which. Brownies are usually done when the sides
  Accurate because brownies continue to bake after pulled
  From the oven. - Debbie Carlson