Sweet potato casserole is a beloved side dish that perfectly balances creamy, naturally sweet sweet potatoes with a crunchy, buttery topping. This 8×8 version is ideal for smaller gatherings or meal prep, offering a rich, comforting flavor that complements holiday meals or everyday dinners alike.
Ingredients
- 3 medium sweet potatoes (about 2 pounds), peeled and cubed
- 1/4 cup granulated sugar
- 1/4 cup brown sugar, packed
- 1/4 cup unsalted butter, melted
- 1/4 cup whole milk
- 1 large egg
- 1 teaspoon vanilla extract
- 1/2 teaspoon ground cinnamon
- 1/4 teaspoon ground nutmeg
- 1/4 teaspoon salt
- For the topping:
- 1/2 cup mini marshmallows (optional)
- 1/2 cup chopped pecans
- 1/4 cup all-purpose flour
- 1/4 cup brown sugar, packed
- 3 tablespoons unsalted butter, cold and cubed
Instructions
- Preheat your oven to 350°F (175°C). Lightly grease an 8×8-inch baking dish and set aside.
- Place the peeled and cubed sweet potatoes in a large pot and cover with cold water. Bring to a boil, then reduce heat and simmer for 15-20 minutes, or until the potatoes are tender when pierced with a fork.
- Drain the sweet potatoes thoroughly and transfer them to a large mixing bowl. Mash them with a potato masher or fork until smooth but still slightly textured.
- Add granulated sugar, brown sugar, melted butter, milk, egg, vanilla extract, cinnamon, nutmeg, and salt to the mashed sweet potatoes. Stir well to combine into a creamy, uniform mixture.
- Spread the sweet potato mixture evenly into the prepared 8×8 baking dish.
- To make the topping, combine the chopped pecans, flour, and brown sugar in a small bowl. Use your fingers or a pastry cutter to cut the cold butter into the mixture until it resembles coarse crumbs.
- Sprinkle the pecan topping evenly over the sweet potato layer. If using marshmallows, scatter them on top of the pecan mixture.
- Bake uncovered for 30-35 minutes, or until the topping is golden brown and the casserole is heated through. If marshmallows are used, broil for an additional 1-2 minutes at the end to toast them lightly—watch closely to prevent burning.
- Remove from the oven and let the casserole cool for 5-10 minutes before serving.
Tips
- Sweet potato variety: Use moist, orange-fleshed sweet potatoes like Beauregard or Jewel for the best natural sweetness and texture.
- Milk substitution: Whole milk provides creaminess, but you can substitute with half-and-half or a plant-based milk like almond or oat milk if preferred.
- Make ahead: Prepare the casserole up to the baking step and refrigerate overnight. Add topping and bake just before serving.
- Common mistake: Overmashing sweet potatoes can make the casserole gluey. Aim for creamy but with some texture.
Serving Suggestions
This sweet potato casserole pairs wonderfully with roasted turkey, glazed ham, or baked chicken. For a full holiday meal, serve alongside green bean casserole, cranberry sauce, and warm dinner rolls. Garnish with a sprinkle of extra pecans or a dash of cinnamon for a festive touch.
Variations
Pecan praline topping: Swap the crumbly topping for a sticky pecan praline made with brown sugar, butter, and chopped pecans cooked briefly on the stove, then spread on top before baking.
Spiced maple version: Add 2 tablespoons of pure maple syrup and increase cinnamon to 1 1/2 teaspoons for a warm, spiced flavor.
Vegan adaptation: Use coconut oil instead of butter, substitute the egg with a flax egg (1 tbsp ground flaxseed + 3 tbsp water), and plant-based milk to keep it vegan-friendly.
Storage and Reheating
Store leftover sweet potato casserole covered tightly in the refrigerator for up to 4 days. To reheat, cover loosely with foil and warm in a 350°F (175°C) oven for 15-20 minutes until heated through. Avoid microwaving if possible to maintain topping texture. For longer storage, freeze the casserole (without marshmallow topping) in an airtight container for up to 2 months. Thaw overnight in the refrigerator before reheating.
Frequently Asked Questions
Can I use canned sweet potatoes instead of fresh?
Yes, you can substitute canned sweet potatoes to save time. Use about 2 cups mashed canned sweet potatoes (drained if necessary). Keep in mind canned varieties may be softer and less flavorful, so adjust seasonings accordingly.
Is it okay to prepare this casserole a day in advance?
Absolutely! Prepare the mashed sweet potato base and assemble it in the baking dish, then cover and refrigerate overnight. Add the topping and bake just before serving to keep it fresh and crunchy.
What if I don’t have mini marshmallows for the topping?
Mini marshmallows add a traditional sweetness and texture contrast but are optional. You can skip them or use large marshmallows cut into smaller pieces. Alternatively, increase the crunchy pecan topping for more texture.
Can I make this casserole gluten-free?
Yes. Simply substitute the all-purpose flour in the topping with a gluten-free flour blend or almond flour. The texture will be slightly different but still delicious.
How do I prevent the topping from burning?
Keep an eye on the casserole during the last few minutes of baking, especially if broiling marshmallows. If the topping browns too quickly, tent the dish loosely with foil to protect it while the casserole finishes baking.
Can I double this recipe for a larger crowd?
Definitely. For a 9×13-inch pan, simply double all ingredients and increase baking time to about 40-45 minutes, checking for doneness and browning as you go.
Sweet potato casserole is a timeless comfort food that combines creamy sweetness with a satisfying crunch, making it a standout side for many occasions. This 8×8 recipe is approachable, customizable, and perfect for both casual dinners and festive gatherings. With these tips and variations, you can easily tailor it to your taste and dietary needs, ensuring a delicious and memorable dish every time.
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