1 milk chocolate candy bar (1.55 ounces), quartered
4 large marshmallows
Spread both sides of each Oreo cookie with peanut butter; place each on a graham cracker half. Top with chocolate.
Using a long metal skewer or long-handled fork, toast marshmallows 6 in. from medium-hot heat until golden brown, turning occasionally. Place on chocolate; cover with remaining graham crackers. Serve immediately.