3/4 cup chocolate-hazelnut spread (such as Nutella®)
12 peanut butter cookies
6 jumbo marshmallows
Spread 1 tablespoon chocolate hazelnut spread onto the bottom of each peanut butter cookie.
Skewer a marshmallow and turn slowly over a campfire or grill until roasted on the outside and soft and melted in the center, 2 to 3 minutes.
Place roasted marshmallow on top of 1 cookie, chocolate-hazelnut spread-side up; cover with another cookie, chocolate-hazelnut spread-side down. Press together to grasp the marshmallow and pull out the skewer.