This Old-Fashioned Sweet Potato Casserole is a must-have holiday side dish! It’s creamy, rich, and topped with a buttery walnut-brown sugar crumble. It's easy to prepare and can be made ahead, making it ideal for busy holiday gatherings.
My first encounter with this sweet potato casserole was at Ruth's Chris Steakhouse, and it was love at first bite. The creamy sweetness paired with the crunch of the brown sugar topping felt like dessert disguised as a side dish. I’ve always been a fan of sweet potatoes, but this dish took it to another level.
Since then, I've experimented with my own versions at home, especially using Korean sweet potatoes, which have a naturally sweet flavor and smooth texture. Plus, they give this casserole an extra rich and unique taste. This dish has become a staple during the holidays, but I love making it year-round!
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Why You'll Love This Recipe?
- Rich and Creamy Texture: Velvety smooth with just the right amount of butter and cream.
- Crunchy Topping: The walnut and brown sugar topping adds a perfect balance of crunch and sweetness.
- Perfect Holiday Side Dish: This casserole is a crowd-pleaser for Thanksgiving, Christmas, or any family gathering.
- Make Ahead Friendly: You can prep this dish in advance, making holiday meal planning less stressful.
- Unique Twist with Korean Sweet Potatoes: Adds a delicious depth of flavor with a hint of nuttiness.
What is Korean Sweet Potato?
Korean sweet potatoes, known as "goguma" in Korean, are prized for their natural sweetness. These kin have a distinct purple skin and pale yellow flesh, setting them apart from the orange-fleshed sweet potatoes commonly seen in Western cuisine.
Originating from East Asia, they are a popular snack in Korea, especially in winter months when roasted or steamed. With a dense and almost chestnut-like flavor, they’re often used in both savory and sweet dishes, making them perfect for casseroles like this one.
Ingredients
Here's what you'll need:
- Korean Sweet Potatoes: Known for their sweet, nutty flavor and rich texture. You’ll need to peel and boil them before mashing.
- Condensed Milk: Adds sweetness and creaminess to the sweet potato mixture
- Egg: Helps bind the casserole and gives it a fluffy texture.
- Evaporated milk: For creaminess and richness.
- Cinnamon and Nutmeg: Warm spices that complement the potatoes.
- Salt: Balances the sweetness and enhances the flavors.
- Vanilla Extract: Adds a subtle fragrance.
- Butter: Rich and creamy, a key ingredient in both the casserole and topping.
Topping Ingredients:
- All-Purpose Flour: Gives structure to the topping.
- Brown Sugar: Adds sweetness and caramelized flavor.
- Butter: Makes the topping crispy and buttery.
- Walnuts (optional): I ran out of pecans so I'm using walnut to adds crunch and toasty, nutty flavor.
See recipe card for quantities.
Substitution and Additions
- Sweet Potatoes: Use regular orange sweet potatoes. It work just as well.
- Half and Half: You can substitute with heavy cream for extra richness or use milk for a lighter version.
- Walnuts: Pecans are a great alternative if you prefer a different nut for the topping.
- Cinnamon and Nutmeg: You can adjust the spice levels or even add a pinch of ginger or allspice for extra warmth.
- Butter: For a dairy-free option, use a plant-based butter substitute.
How To Make Old-Fashioned Sweet Potato Casserole?
- Prep the Sweet Potatoes: Peel and chop the Korean sweet potatoes into cubes. Boil in salted water until tender, about 15-20 minutes. Drain and mash until smooth.
- Make the Casserole Base: In a large bowl, mix the mashed sweet potatoes, condensed milk, egg, half and half, cinnamon, nutmeg, vanilla extract, and melted butter. Stir until everything is combined.
- Prepare the Topping: In a separate bowl, mix together the flour, brown sugar, and melted butter until it forms a crumbly mixture. Stir in the walnuts.
- Assemble the Casserole: Spread mixture into a greased casserole dish. Evenly sprinkle the walnut topping over the top.
- Bake: Preheat your oven to 350°F (175°C). Bake the casserole for 25-30 minutes, until the top is golden and bubbly.
- Serve: Let it cool slightly before serving, and enjoy the creamy, crunchy deliciousness!
Variations
- Marshmallow Topping: Swap out the walnut topping for a layer of mini marshmallows for an even sweeter, gooey finish.
- Pecan Topping: Use pecans instead of walnuts for a Southern-style twist on the classic casserole.
- Healthier Version: Use coconut sugar instead of brown sugar and replace butter with coconut oil for a lighter version.
What To Serve With This
- Roast Turkey or Baked Ham: This casserole pairs perfectly with any roasted meats, making it an excellent side dish for Thanksgiving or Christmas dinner.
- Green Bean Casserole: Add some green beans and potatoes with butter and sausages for a balanced meal with a touch of green.
- Cranberry Sauce: Cranberry sauce complements the rich and sweet flavors of the casserole.
- Dinner Rolls: Soft, buttery dinner rolls are the perfect companion to this creamy dish, allowing you to soak up all the flavors.
- Gouda Mac and Cheese: Creamy gouda mac and cheese brings a smoky, cheesy side that pairs perfectly with spices of the sweet potatoes.
- Garlic Mashed Potatoes. This provide a savory counterpart to sweet potato casserole.
- Cornbread: The slight sweetness and crumbly texture of cornbread make it an ideal pairing for sweet potato casserole. It’s a comforting, Southern-inspired combo.
- Caesar Salad: A crisp salad with a tangy dressing and crunchy croutons cuts through the richness of the casserole and adds a fresh, light element to the meal.
How to Store Leftovers
Store any leftover sweet potato casserole in an airtight container in the refrigerator for up to 3-4 days. Reheat in the oven at 350°F (175°C) until warmed through, or microwave individual portions for a quick side dish.
Expert Tips
- Make Ahead: Prepare the casserole a day before your event and store it in the refrigerator. Just add the topping before baking!
- Perfect Texture: For extra smooth sweet potatoes, use food processor instead of mashing by hand.
- Balance the Sweetness: If you prefer a less sweet casserole, cut the condensed milk in half or skip it in the sweet potato mixture and keep it only for the topping.
Recipe FAQs
Korean sweet potatoes have purple skin and a firmer, nuttier, sweeter flesh compared to orange-fleshed sweet potatoes.
It’s typically served as a side dish, especially during holidays, but its sweet flavors make it almost dessert-like!
Yes, you can freeze the casserole after baking. Thaw it in the fridge overnight and reheat in the oven before serving.
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More Easy Desserts
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Old-Fashioned Sweet Potato Casserole Recipe
Equipment
- 1 Pie baking plate
Ingredients
- 2 large Korean Sweet Potatoes
- ½ cup Condensed Milk
- 1 Egg
- ½ cup Evaporated milk
- ½ teaspoon Cinnamon
- ¼ teaspoon Nutmeg
- ½ teaspoon Salt
- 2 teaspoon Vanilla Extract
- ½ cup Butter melted
Topping Ingredients:
- ⅓ cup All-Purpose Flour
- ⅓ cup Dark Brown Sugar
- 3 tablespoon Butter cold
- 1 cup Walnuts chopped
Instructions
- Prep the Sweet Potatoes: Peel and chop the Korean sweet potatoes into cubes. Boil in salted water until tender, about 15-20 minutes. Drain and mash until smooth.
- Make the Casserole Base: In a large bowl, mix the mashed sweet potatoes, condensed milk, egg, half and half, cinnamon, nutmeg, vanilla extract, and melted butter. Stir until everything is combined.
- Prepare the Topping: In a separate bowl, mix together the flour, brown sugar, and melted butter until it forms a crumbly mixture. Stir in the walnuts.
- Assemble the Casserole: Spread the sweet potato mixture into a greased casserole dish. Evenly sprinkle the walnut topping over the top.
- Bake: Preheat your oven to 350°F (175°C). Bake the casserole for 25-30 minutes, until the top is golden and bubbly.
- Serve: Let it cool slightly before serving, and enjoy the creamy, crunchy deliciousness!
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