Step 3
With stand mixer or hand-held mixer, beat peanut butter cookie mix, 2 tablespoons oil and 1 tablespoon water until a crumbly dough forms. Spoon tablespoons of dough over chocolate cookie dough. Spoon remaining chocolate cookie dough in between mounds of peanut butter cookie dough. Use spatula to flatten dough. Sprinkle chocolate chunks evenly over top.