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+ servings

Sweet Potato Slab Pie (With Sugar Cookie Crust & Marshmallow Whip)

Rachel Norman
This sweet potato pie is a great harvest fall dessert. It's a slab pie, so it's big enough to serve a crowd and great for fall spice lovers.
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Prep Time 20 mins
Cook Time 40 mins
Potato prep 50 mins
Total Time 1 hr 50 mins
Course Dessert
Cuisine Southern
Servings 16 people
Calories 392 kcal


  • Jelly roll pan


  • 1 roll sugar cookie dough store bought
  • 3 cups sweet potatoes about 3.5 pounds
  • 1/2 cup butter
  • 1/2 cup brown sugar
  • 1/2 cup white sugar
  • 3/4 cup heavy cream
  • 3 eggs
  • 1 tsp nutmeg ground
  • 1 tsp cinnamon ground
  • 1/2 tsp cloves ground
  • 2 tsp lemon juice
  • 1 tsp vanilla extract

Marshmallow Whipped Cream

  • 1 cup heavy cream
  • 7 oz marshmallow fluff
  • 1 tsp vanilla extract


Pie Instructions

  • Preheat the oven to 350 degrees.
  • On a floured surface, roll out cookie dough, slightly larger than your pan.
  • Carefully transfer cookie dough to pan, fold edges down to meet the pan.
  • Bake cookie dough according to package directions, approximately 11 minutes.
  • Remove the pie crust from the oven and allow to cool completely.
  • Increase oven temperature to 450 degrees F.
  • Place the sweet potatoes on a cookie sheet and bake them for 50-60 minutes or until soft.
  • Remove the potatoes from the over, and carefully slice them open and scoop out the flesh.
  • Lower the oven temperature back to 350 degrees F.
  • Add the flesh to your stand mixer and mix the sweet potatoes. Add the butter and mix well. Add the sugar, heavy cream, eggs, nutmeg, cinnamon, cloves, lemon juice and vanilla extract. Beat until smooth.
  • Pour the pie filling into the baked, cooled pie crust.
  • Bake at 350 degrees F for 40-50 minutes.
  • Cool to room temperature, cover with plastic wrap and chill overnight.

Marshmallow Fluff Topping

  • Prepared whipped topping on the day of serving.
  • To make whipped topping, beat heavy cream until stiff peaks form, add in marshmallow fluff and vanilla extract, mix well.
  • Add to the top of the pie. Enjoy!


  • Cook time may be less depending on how "hot" your oven bakes. Adjust accordingly. 


Calories: 392kcalCarbohydrates: 48gProtein: 3gFat: 22gSaturated Fat: 12gPolyunsaturated Fat: 1gMonounsaturated Fat: 8gTrans Fat: 1gCholesterol: 85mgSodium: 173mgPotassium: 172mgFiber: 1gSugar: 32gVitamin A: 4154IUVitamin C: 1mgCalcium: 41mgIron: 1mg
Keyword slab pie
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