Homestyle Old Fashioned Sweet Potato Casserole

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Old Fashioned Sweet Potato Casserole: Your favorite holiday side! Creamy sweet potatoes, warm spices, & toasted marshmallows. A comforting classic.
Isabella rossi
Updated on Tue Oct 28 2025 at 10:17 AM
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Homestyle Old Fashioned Sweet Potato Casserole | Recipesquickie

I swear, some smells just take you places, you know? For me, the scent of cinnamon and sweet potatoes baking transports me straight back to my grandma’s kitchen. This Old Fashioned Sweet Potato Casserole isn't just a recipe, it's a hug from my past. I remember one Thanksgiving, trying to "help" her, and honestly, I mostly just made a mess with the marshmallows. She just laughed, wiped my sticky hands, and handed me a spoon. That warmth, that comfort? That's what I chase every time I make this dish. It's special, it's comforting, and it always tastes like home.

Oh, the kitchen chaos! One year, I was so proud of myself for getting this Old Fashioned Sweet Potato Casserole into the oven, only to realize after it was baking that I’d forgotten the brown sugar. The horror! I had to pull it out, scoop it back into the bowl, and mix it in. It was a sticky, slightly lumpy mess, but honestly, it still tasted incredible. A little imperfection just adds character, right?

Ingredients

  • Sweet Potatoes: Use real ones, hon! About 3 pounds, peeled and chopped. Those canned ones? We're not doing that here. The fresh ones have a sweetness that just can't be replicated, and honestly, peeling them is a good arm workout.
  • Unsalted Butter: A whole stick, melted. Don't skimp on this. It adds a richness that truly makes this Old Fashioned Sweet Potato Casserole sing. I once tried margarine, and it was... an experience. Not a good one.
  • Granulated Sugar: Just enough to enhance the potatoes' natural sweetness. My grandma always said a little sugar makes everything better, and she wasn't wrong.
  • Large Eggs: Two, lightly beaten. They're the binding magic, making everything creamy and holding it all together. I forgot them once, and let's just say it was more of a sweet potato scramble. Oops!
  • Milk (Whole Milk, please!): Half a cup. Don't even think about skim, it just won't give you that luxurious texture this Old Fashioned Sweet Potato Casserole deserves. I tried almond milk for a dairy-free friend, and it worked, but the richness wasn't quite there.
  • Vanilla Extract: A teaspoon. Pure vanilla, not imitation. It's a small detail, but it makes a huge difference in the overall warmth of the flavor profile.
  • Ground Cinnamon: A teaspoon. This spice just belongs with sweet potatoes. It smells like autumn and comfort when it hits the warm mixture.
  • Ground Nutmeg: Half a teaspoon. A little goes a long way here. It adds a subtle, earthy warmth. I once got heavy-handed, and it tasted like a Christmas candle, so measure carefully!
  • Mini Marshmallows: About 3 cups. The fluffy, golden crown of this Old Fashioned Sweet Potato Casserole. There's no substitute for that gooey, slightly charred sweetness. I've tried homemade meringue, but honestly, the minis are just classic.

Instructions

Prep Those Spuds:
First things first, get those sweet potatoes peeled and chopped into 1-inch cubes. I usually boil them in a big pot of lightly salted water until they're fork-tender, about 15-20 minutes. You want them soft enough to mash easily, but not watery. This is where I sometimes forget the salt, and then the potatoes taste a little flat, so don't be like me!
Blend the Sweet Potato Magic:
Drain the potatoes well super important! Then, transfer them to a large bowl. Add the melted butter, granulated sugar, beaten eggs, milk, vanilla, cinnamon, and nutmeg. Mash everything until it's mostly smooth. I like a few tiny lumps for texture, but you do you. Taste it here, and adjust the sweetness or spices if you feel it needs a little more love. This is the heart of our Old Fashioned Sweet Potato Casserole, so make it sing!
Into the Baking Dish It Goes:
Pour the glorious sweet potato mixture into a 9x13 inch baking dish. Make sure it's evenly spread. I usually give the dish a little tap on the counter to settle everything. It just feels right. Preheat your oven to 375°F (190°C) while you're doing this. The anticipation, honestly, is half the fun!
First Round in the Oven:
Pop the dish into the preheated oven and bake for 20-25 minutes. You want the casserole to be heated through and slightly set. This step ensures the base is warm and ready for its crowning glory. I usually peek in the oven around the 15-minute mark, just to make sure everything's looking good. Don't let it dry out too much!
Crown It with Marshmallows:
Take the casserole out of the oven. Now for the fun part: scatter those mini marshmallows evenly over the top. Don't be shy! This is what makes it an Old Fashioned Sweet Potato Casserole. I've tried making pretty patterns, but honestly, just tossing them on works perfectly.
Toast to Perfection:
Return the casserole to the oven for another 5-10 minutes, or until the marshmallows are beautifully golden brown and gooey. Keep a close eye on them, because they can go from perfectly toasted to burnt in a flash! I’ve had more than one marshmallow topping disaster because I walked away for "just a second." Let it cool slightly before serving, those marshmallows are molten lava!

Making this Old Fashioned Sweet Potato Casserole always feels like a little kitchen dance. Sometimes I’m humming, sometimes I’m cursing a sticky mess, but it’s always filled with good energy. There was one time, a little mishap with the sugar, but even then, the scent filling the kitchen just made everything feel right. It’s a dish that just makes me happy, chaos and all.

Old Fashioned Sweet Potato Casserole Storage Tips

Oh, the leftovers! Honestly, Old Fashioned Sweet Potato Casserole reheats pretty well, which is a win in my book. Just pop any remaining casserole into an airtight container and stash it in the fridge. It'll keep happily for about 3-4 days. I've tried freezing it before, and while the flavor holds up, the texture can get a little watery, especially the marshmallow topping, which turns a bit… chewy. So, I generally stick to refrigerating it. When reheating, I usually go for the oven at 300°F (150°C) for about 15-20 minutes to keep that lovely warmth. Microwaving works in a pinch, but the marshmallows lose their magic, becoming a little rubbery. So, for the best experience, oven is the way to go!

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Old Fashioned Sweet Potato Casserole Ingredient Swaps

Life happens, and sometimes you don't have exactly what the recipe calls for. For this Old Fashioned Sweet Potato Casserole, I've had my share of experiments! If you're out of whole milk, half-and-half or even evaporated milk can work for richness, though the flavor will be a tad different. I once used heavy cream, and it was decadent, but also felt like a dessert on steroids! If you don't have fresh sweet potatoes, frozen cubed sweet potatoes can work in a pinch just make sure they're thawed and drained well. As for the spices, if you're missing nutmeg, a tiny pinch of allspice could step in, but don't overdo it. And if you're not a marshmallow fan, a crunchy pecan streusel (butter, brown sugar, flour, pecans) is a fantastic alternative that adds a lovely textural contrast. I tried using puffed rice cereal once for crunch, and it was… interesting. Stick to pecans, honestly.

Old Fashioned Sweet Potato Casserole Serving Ideas

This Old Fashioned Sweet Potato Casserole, with its creamy texture and sweet, spiced notes, just screams 'comfort'! It's a classic holiday side, obviously, pairing beautifully with roasted turkey or a glazed ham. But honestly, I love it alongside a simple roast chicken for a weeknight meal when I need a little extra warmth. For drinks, a crisp apple cider or even a warm spiced tea would be lovely. If you're feeling a bit fancy, a dry white wine like a Chenin Blanc can surprisingly cut through the richness beautifully. And for dessert? If you even have room after this, a simple apple pie or some pumpkin cookies would keep that cozy, fall vibe going. This dish with a good book and a fluffy blanket? Yes, please. It's truly a hug in a bowl.

Old Fashioned Sweet Potato Casserole History

The story of Old Fashioned Sweet Potato Casserole is deeply rooted in American culinary traditions, especially in the South. Sweet potatoes have been a staple crop there for centuries, and over time, cooks started transforming them into sweet, comforting dishes. The addition of marshmallows, though, is a bit more recent a brilliant marketing move by marshmallow companies in the early 20th century! My own connection to this dish comes from my grandma, who grew up in the rural South. For her, it wasn't just food, it was a way to bring everyone together, a symbol of abundance and family. She'd always say, 'A good casserole means a full heart and a full belly.' It's a dish that carries generations of warmth and hospitality, and every time I make it, I feel that connection to my heritage, and to her.

And there you have it, my take on a truly classic Old Fashioned Sweet Potato Casserole. This dish, with its creamy insides and golden marshmallow hat, honestly brings so much joy to my kitchen. It might not always be perfect sometimes the marshmallows get a little too toasted, or I forget an ingredient but it always tastes like home. I hope it brings a little bit of that same cozy magic to your table. Let me know how your version turns out!

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Frequently Asked Questions

→ Can I make this Old Fashioned Sweet Potato Casserole ahead of time?

Absolutely! You can prepare the sweet potato base, cover it, and keep it in the fridge for up to two days. Just add the marshmallows right before you pop it into the oven to bake and toast.

→ What if I don't like marshmallows on my Old Fashioned Sweet Potato Casserole?

No problem at all! I often swap them for a pecan streusel topping (butter, brown sugar, flour, chopped pecans) for a different kind of crunch and sweetness. It's a fantastic alternative!

→ Why did my marshmallows burn so quickly?

Oh, I've been there! Marshmallows brown super fast. The trick is to keep a very close eye on them, especially during the last few minutes. Ovens vary, so sometimes it's just a minute or two for that perfect golden glow.

→ How long does Old Fashioned Sweet Potato Casserole last in the fridge?

Stored in an airtight container, your casserole should be good for 3-4 days in the refrigerator. The texture of the marshmallows might change a bit, but the flavor will still be lovely for quick reheating.

→ Can I use canned sweet potatoes for this recipe?

While I prefer fresh for the best flavor and texture in this Old Fashioned Sweet Potato Casserole, you can use canned sweet potatoes (drained very well!) if you're in a pinch. Just reduce the added sugar slightly as they are often packed in syrup.

Homestyle Old Fashioned Sweet Potato Casserole

Old Fashioned Sweet Potato Casserole: Your favorite holiday side! Creamy sweet potatoes, warm spices, & toasted marshmallows. A comforting classic.

4.3 out of 5
(47 reviews)
Prep Time
20 Minutes
Cook Time
30 Minutes
Total Time
50 Minutes


Difficulty: Intermediate

Cuisine: American

Yield: 8 Servings

Dietary: Vegetarian

Published: Tue Oct 28 2025 at 10:17 AM

Start Cooking
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Ingredients

→ Base Ingredients

01 3 lbs sweet potatoes, peeled and chopped
02 1/2 cup whole milk
03 1 tsp vanilla extract

→ Sweetener & Binder

04 1/2 cup unsalted butter, melted
05 1/2 cup granulated sugar
06 2 large eggs, lightly beaten

→ Flavor Boosters

07 1 tsp ground cinnamon
08 1/2 tsp ground nutmeg

→ Topping

09 3 cups mini marshmallows

Instructions

Step 01

First things first, get those sweet potatoes peeled and chopped into 1-inch cubes. I usually boil them in a big pot of lightly salted water until they're fork-tender, about 15-20 minutes. You want them soft enough to mash easily, but not watery. This is where I sometimes forget the salt, and then the potatoes taste a little flat, so don't be like me!

Step 02

Drain the potatoes well – super important! Then, transfer them to a large bowl. Add the melted butter, granulated sugar, beaten eggs, milk, vanilla, cinnamon, and nutmeg. Mash everything until it's mostly smooth. I like a few tiny lumps for texture, but you do you. Taste it here, and adjust the sweetness or spices if you feel it needs a little more love. This is the heart of our Old Fashioned Sweet Potato Casserole, so make it sing!

Step 03

Pour the glorious sweet potato mixture into a 9x13 inch baking dish. Make sure it's evenly spread. I usually give the dish a little tap on the counter to settle everything. It just feels right. Preheat your oven to 375°F (190°C) while you're doing this. The anticipation, honestly, is half the fun!

Step 04

Pop the dish into the preheated oven and bake for 20-25 minutes. You want the casserole to be heated through and and slightly set. This step ensures the base is warm and ready for its crowning glory. I usually peek in the oven around the 15-minute mark, just to make sure everything's looking good. Don't let it dry out too much!

Step 05

Take the casserole out of the oven. Now for the fun part: scatter those mini marshmallows evenly over the top. Don't be shy! This is what makes it an Old Fashioned Sweet Potato Casserole. I've tried making pretty patterns, but honestly, just tossing them on works perfectly.

Step 06

Return the casserole to the oven for another 5-10 minutes, or until the marshmallows are beautifully golden brown and gooey. Keep a close eye on them, because they can go from perfectly toasted to burnt in a flash! I’ve had more than one marshmallow topping disaster because I walked away for "just a second." Let it cool slightly before serving, those marshmallows are molten lava!

Notes

  1. Honestly, don't over-mash the sweet potatoes if you like a bit of texture. A few small lumps add character!
  2. You can totally prep the sweet potato base a day ahead and store it covered in the fridge. Just add the marshmallows right before baking!
  3. No marshmallows? A pecan streusel topping works wonders too! I've swapped them out when I'm feeling fancy or just out of minis.
  4. A dollop of whipped cream or a sprinkle of toasted pecans on top after baking takes this from great to absolutely divine.

Tools You'll Need

  • Large pot
  • potato masher
  • large mixing bowl
  • 9x13 inch baking dish
  • measuring cups and spoons

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Dairy
  • Eggs

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 350 kcal
  • Total Fat: 15g
  • Total Carbohydrate: 50g
  • Protein: 4g

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