Peanut butter is used three times in these dense, rich, moist, fast, and easy bars. There’s peanut butter stirred into the dough, Peanut Butter M&Ms, and peanut butter chips, so the bars pack a bold, peanut buttery punch. There’s plenty of chocolate, the perfect compliment to all that peanut butter. Use the dough base as a blank canvas and start cleaning out your pantry – butterscotch or white chocolate chips, nuts and seeds, dice old holiday candy and toss it in. Mix and match with the…