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Sweet Potato Casserole


Serve up this casserole made with mashed sweet potatoes and a marshmallow topping that's a perfect combination of gooey and crunchy. With the help of a little nutmeg for flavor, this casserole is sure to be a new favorite.

  • Prep:
  • Total Time:
  • Servings: 8
sweet potato casserole

Photography: John Kernick

Source: Everyday Food, November 2008


  • 3 pounds sweet potatoes (about 8), peeled and cut into 1-inch chunks
  • Coarse salt and ground pepper
  • 1/2 cup whole milk
  • 4 tablespoons butter
  • 1/2 teaspoon ground nutmeg
  • 2 cups mini marshmallows or chopped regular marshmallows


  1. Preheat oven to 375 degrees. Place sweet potatoes in a large saucepan, and cover with cold water by 1 inch; salt generously. Bring to a boil; reduce to a simmer, and cook until easily pierced with the tip of a paring knife, 15 to 20 minutes. Drain, and return to pan. Heat over medium, stirring, until liquid has evaporated and a thin film covers bottom of pan, about 2 minutes.

  2. Remove pan from heat; add milk, butter, and nutmeg. Mash until smooth; season with salt and pepper. Transfer sweet-potato mixture to a 2-quart baking dish. (To make ahead, refrigerate, up to 1 day.)

  3. Top casserole with marshmallows; bake until center is warmed through and marshmallows are lightly browned, 15 to 20 minutes.

Reviews Add a comment

  • ms masson
    5 DEC, 2013
    Just made this for Thanksgiving. PERFECT recipe! my family ate more of this casserole than they did mashed potatoes - AND THAT NEVER happens! I used fresh ground nutmeg. Also I threw a little sprinkle of brown sugar on top - but it didnt need it.
  • SelenaG
    26 DEC, 2012
    I just made this recipe for Christmas dinner & received rave reviews! I did sprinkle a little brown sugar on top, before I added the marshmallows. The roasted marshmallows give the casserole such a nice crunch & texture - delicious!! I will definitely be making this again! Thank Martha!
  • MS11017400
    23 NOV, 2012
    Yum!! I swapped out the nutmeg for cinnamon and added 1/3 cup of brown sugar. Also, like some people mentioned, 8 potatoes might be an awful lot for three pounds!!! In any case, the casserole was delish! Thank you Martha!
  • BusyInLondon
    24 DEC, 2010
    I LOVE sweet potato casserole! This was my first Thanksgiving away from the States, so my husband
  • FNPathome
    26 NOV, 2010
    My family enjoyed this recipe on Thanksgiving. I usually make a much sweeter recipe with nuts etc., but this was extremely simple and surprisingly good!
  • suziewho
    25 NOV, 2010
    I've been making this recipe for years, however, on occasion, I add 1/3 cup chopped walnuts. I always add 1/4 cup brown sugar as well. They have been my sons favourite since he was 3 years old and he still asks for my sweet potatoes at every family dinner and he's 40. They really are amazing.
  • mmwulff
    2 NOV, 2010
    My mom's secret has always been to add a dash of cooking sherry and very finely diced apples to her potatoes. They are to die for and every time I make them, people are trying to dissect the wonderful flavor and taste sensation.
  • niftynoodle
    19 NOV, 2008
    I also used the large chopped marshmallows - I do not know how they look so dusted and white and puffy in the picture; mine kept their round shape and turned brown and glossy. It all still tasted great! (although there were so many potatoes there was not a great marshmallow-to-sweet potato ratio) Yummy, plenty of leftovers. :)
  • niftynoodle
    19 NOV, 2008
    I picked out 8 sweet potatoes that came to nearly exactly 3 pounds. They did not all fit in a "large saucepan", I had to move the whole mess to a large pot. They also did not fit in a 2-quart baking dish; they were bursting out of my 2.5 liter dish. So, I would recommend fewer sweet potatoes. Probably 6. I mashed some brown sugar into mine as well.