sweet potato casserole with pecans, brown sugar and marshmallow

Sweet Potato Casserole Recipe (video)

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The best sweet potato casserole I ever had! If you’re a fan of this iconic Thanksgiving recipe, you must give this version a try! I make my casserole with lightly sweetened sweet potatoes and a crunchy brown sugar, butter and pecan topping that turns crunchy after baking! The finishing touch is the homemade marshmallow topping! This meringue is so light and fluffy and perfectly complements the sweet potatoes! Make sure to add this amazing Thanksgiving dish to your family dinner!

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Preparing the Sweet Potatoes

Making a sweet potato casserole for Thanksgiving is as easy as pie! You can even make the casserole ahead of time, then add the meringue right before serving. To make this delicious dish, I start with the sweet potatoes. I use about 4 pounds of potatoes, or 3 to 4 extra large potatoes. The sweet potatoes need to be peeled and chopped into large chunks. Cut the potatoes into even sized pieces for even cooking. I recommend keeping the potatoes submerged in water as you’re working to prevent browning.

Cook the prepared sweet potatoes in a large pot of water until they’re extra soft. Drain the potatoes and then place into a large mixing bowl. Using a mixer, mash the sweet potatoes, combining them with the brown sugar, salt, vanilla extract, eggs and egg yolks. I use just ¼ cup of brown sugar for my recipe so the sweet potato filling won’t be too sweet. Feel free to add an additional ¼ cup for a sweeter recipe.

Thanksgiving side dish of sweet potato casserole with pecans

The Brown Sugar Pecan Topping

I love every part of this sweet potato casserole recipe but especially the crunchy brown sugar, butter and pecan layer! This layer is made with a butter and flour crumble, then brown sugar, cinnamon, nutmeg and diced pecans are added. As this layer bakes in the oven, the butter melts and caramelizes the brown sugar, creating a crunchy and tasty layer!

To create the butter and flour crumble, I use a pastry cutter. You can also use two large forks to get the job done. Just cube the cold butter into small cubes, then cut into the flour until large crumbles form.

single serving of sweet potato casserole, Thanksgiving recipe

The Fluffy Meringue Topping

While most sweet potato casseroles call for store-bought marshmallows, I wanted to make this Thanksgiving recipe with a homemade marshmallow meringue instead! This incredible meringue is so fluffy, smooth and glossy! Plus, it’s easy to make! Here are a few tips for making the best marshmallow meringue topping:

  • Make sure your mixing bowl is extra clean! I recommend washing the bowl and whisk attachment with white vinegar to remove any residual grease. Any amount of oil can cause the egg whites to remain flat.
  • Cook the sugar syrup using a candy thermometer. I highly recommend getting one since you’ll always find a use for it, even for deep frying! The syrup needs to reach 240F to properly set the meringue.
  • Once the syrup reaches temperature, immediately pour it into the egg whites in a slow and steady stream, with the mixer running on medium speed. Do not allow the syrup to cool!
  • The finished meringue is safe and has no raw egg whites!! The hot sugar syrup cooks the egg whites to a safe temperature.

torched marshmallow meringue over sweet potato casserole

Assembling, Baking & Serving

Once you have the sweet potatoes and the pecan topping done, it’s time to assemble this Thanksgiving dish! First, I spray the inside of a casserole with baking spray, then spoon in the sweet potatoes in an even layer. Next, I spoon on the pecan topping in an even layer all over the layer of sweet potatoes. Bake the casserole in a preheated oven at 375F for about 25 to 27 minutes, until the top is golden brown.

While the casserole is baking, it’s the perfect time to make the meringue! Once the sweet potato casserole is done baking, just add the prepared meringue on top. To torch the meringue, I like to use my kitchen torch. You can also place the casserole under the broiler for a few minutes to add some color to the meringue. Enjoy the casserole warm with the rest of your Thanksgiving sides and main dishes!

sweet potato casserole topped with torched marshmallow meringue

More Recipes

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Sweet Potato Casserole video recipe

Need some supplies or tools? You can get them here (Amazon affiliate links): 
  • Large Casserole Dish: a good casserole tray is a must for every kitchen and it’s so versatile!
  • Pastry Cutter: use this tool for making short crust, pie crust and crumbles.
  • Kitchen Torch: use this handy kitchen torch for torching the marshmallow meringue! I love this fancy kitchen tool!
  • Candy Thermometer: I use this thermometer in the kitchen all the time! For candy making, desserts and even deep frying!
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