Steps

• 1

  When ready to cook, set the Traeger temperature to 375℉ and preheat with the lid closed for 15 minutes.

  375 ˚F / 191 ˚C

• 2

  Pierce the skin of the sweet potatoes with a fork a few times. Place the sweet potatoes on a baking sheet or foil tin.

• 3

  Set the baking sheet on the grill grates, close the lid, and roast until the sweet potatoes are extremely softened, 60-80 minutes. Remove the sweet potatoes from the grill and set aside until cool enough to handle.

  375 ˚F / 191 ˚C

  01:20

• 4

  While the potatoes cool, combine 1/2 cup butter, the brown sugar, vanilla, salt, and pepper in a medium bowl. Whip with a stiff whisk until well combined.

• 5

  Remove and discard the skins from the sweet potatoes, then transfer the flesh to a large bowl and mash until smooth. Fold in the butter mixture.

• 6

  Transfer the sweet potatoes to a large cast iron pan. Top with the mini marshmallows and dot the remaining 1/4 cup butter on top.

• 7

  Place the cast iron on the grill grates. Close the lid and bake until the casserole is warmed through and the marshmallows turn golden, 15-20 minutes. Enjoy!

  375 ˚F / 191 ˚C

  00:20