This classic sweet potato casserole brings together warm spices and a golden marshmallow topping for a dish that’s as nostalgic as it is delicious. Inspired by timeless Betty Crocker traditions, it’s the perfect balance of sweet and spiced.
The base is simple: tender sweet potatoes seasoned with cinnamon and nutmeg, baked until creamy. The real magic happens when a layer of marshmallows melts into a gooey, caramelized crust under the broiler.
What results is a comforting, crowd-pleasing side that’s ideal for holidays or Sunday suppers. The contrast of soft sweet potatoes and toasted marshmallows makes every bite unforgettable.
Easy to prepare and even easier to love, this recipe delivers warmth and sweetness in every serving.
Ingredients for Betty Crocker Sweet Potato Recipe with Marshmallows
Warm spices, creamy sweet potatoes, and that iconic marshmallow topping—pure comfort in every bite.
| Ingredient | Amount | Notes |
|---|---|---|
| Sweet Potatoes 🍠 | 4 lb | Peeled and cubed evenly |
| Unsalted Butter 🧈 | ½ cup | Melted for mixing |
| Granulated Sugar 🍚 | ¾ cup | For sweetening potatoes |
| Ground Cinnamon 🌿 | 2 tsp | Freshly opened for best flavor |
| Ground Nutmeg 🌰 | ½ tsp | Freshly grated preferred |
| Vanilla Extract 💧 | 2 tsp | Pure for best results |
| Large Eggs 🥚 | 2 whole | For binding mixture |
| Miniature Marshmallows ⚪ | 10 oz | For topping layer |
| All-Purpose Flour 🌾 | ¼ cup | For thickening if needed |
| Salt 🧂 | 1 tsp | Fine sea salt preferred |
| Pecans 🌰 | ½ cup | Chopped for crunch |
The sweet potatoes are the foundation, so pick firm ones with smooth skin (no soft spots). Whole Foods or your local farmers market usually have the best selection. For the marshmallows, Jet-Puffed miniatures melt perfectly—avoid the giant ones, they don’t caramelize right. The cinnamon and nutmeg should be fresh; if they’ve been in your cabinet for years, grab new ones from Penzeys.
No miniature marshmallows? Use regular ones cut into quarters (takes longer to melt though). Out of pecans? Walnuts or almonds work just as well—toast them first for extra crunch. Need a dairy-free swap? Use coconut oil instead of butter. The vanilla extract is key here—imitation won’t give you the depth of flavor. Eggs can be swapped for flax eggs if needed.
This casserole tastes even better the next day—store leftovers in the fridge for up to 4 days. Reheat in the oven to keep the topping gooey. For make-ahead, assemble everything except the marshmallows, then add and broil just before serving. Freezes beautifully for up to 3 months.
Why You’ll Love This Recipe
- Dump and Bake: I just toss the sweet potatoes with butter, sugar, and spices, then let the oven do the work—no fancy techniques.
- Melted Magic: That gooey marshmallow topping with warm cinnamon and nutmeg? Ridiculously good, especially with a scoop of vanilla ice cream.
- Holiday Hero: Between us, this is my secret weapon for Thanksgiving—equally great for weeknight dinners when I want comfort food.
- Stretches Far: One batch feeds my whole family, and leftovers (if there are any) reheat beautifully for lunch the next day.
Step-by-Step Instructions for Sweet Potatoes With Marshmallows
This method delivers that iconic combination of spiced sweetness and golden marshmallow perfection.
Step 1: Prepare and Boil the Sweet Potatoes
Peel the 4 lb sweet potatoes and cut them into uniform 1-inch cubes for even cooking. Place them in a large pot and cover with cold water by about 1 inch. Add the 1 tsp salt to the water—this enhances the potato’s natural flavor as they cook.
Bring to a boil over high heat, then reduce to a gentle simmer. Cook for 10-12 minutes until the potatoes are tender when pierced with a fork but still hold their shape. Drain immediately in a colander and let them steam-dry for 2 minutes to remove excess moisture.
Step 2: Make the Spiced Sweet Potato Mixture
In a large mixing bowl, combine the 0.5 cup unsalted butter (melted), 0.75 cup granulated sugar, 2 tsp ground cinnamon, 0.5 tsp ground nutmeg, and 2 tsp vanilla extract. Whisk until the sugar is mostly dissolved and the spices are evenly distributed throughout the liquid.
Add the drained sweet potatoes to the bowl and fold gently to coat them completely in the spiced butter mixture. Now beat the 2 whole large eggs lightly in a small bowl, then stir them into the sweet potato mixture. The eggs act as a binder, so mix just until incorporated—overworking will make the texture gummy.
Step 3: Thicken and Transfer to Baking Dish
Sprinkle the 0.25 cup all-purpose flour over the sweet potato mixture and fold gently until no dry spots remain. The flour thickens the mixture slightly and helps create that classic casserole texture. The mixture should be moist but not soupy—it will set further during baking.
Transfer the mixture to a greased 9×13-inch baking dish and spread it into an even layer. Smooth the top with a spatula, but don’t press down too hard—you want to maintain some airiness in the mixture for the best texture.
Step 4: Add Toppings and Bake to Perfection
Scatter the 0.5 cup pecans evenly over the sweet potato mixture, then distribute the 10 oz miniature marshmallows across the top. I like to press some marshmallows lightly into the mixture so they melt into the casserole, while leaving others on top for that beautiful golden finish.
Bake in a preheated 375°F oven for 20-25 minutes until the marshmallows are deep golden brown and slightly puffed, with some areas developing a light crust. Keep an eye on it after 18 minutes—marshmallows can go from perfectly toasted to burnt quickly. The pecans should also be fragrant and lightly toasted.
Step 5: Rest and Serve Warm
Remove from the oven and let the casserole rest for 5-10 minutes before serving. This allows the mixture to set slightly, making it easier to serve neat portions. The marshmallows will deflate a bit as they cool, which is normal.
Serve warm while the marshmallows are still gooey. Each serving should have a generous portion of the sweet potato mixture with plenty of melted marshmallows and toasted pecans on top. The contrast of the creamy, spiced potatoes with the sweet, crispy topping is what makes this dish unforgettable.
Pro Tips For Making Betty Crocker Sweet Potato Recipe With Marshmallows
- Roast, Don’t Boil: I learned this the hard way—boiling sweet potatoes makes them waterlogged and dull. Roasting at 400°F caramelizes the natural sugars and gives that deep, rich flavor the marshmallows will cling to.
- Toast the Spices: Sounds weird, but it works: lightly toasting the cinnamon and nutmeg in a dry pan for 30 seconds before mixing wakes up their aroma. Your casserole will taste like it simmered all day.
- Skip Cold Butter: After burning three batches, I finally figured out that cold butter doesn’t melt evenly into the sugar mixture. Let it sit at room temp for 20 minutes—your glaze will be smooth, not greasy.
- Broil at the End: The marshmallows will just sit there if you bake them the whole time. Switch to broil for the last 2-3 minutes to get that golden, gooey top without overcooking the potatoes.
Essential Equipment for Great betty crocker sweet potato recipe with marshmallows
Baking Dish Essentials
For this casserole, a 9×13-inch glass or ceramic baking dish is ideal—it conducts heat evenly and lets you monitor the marshmallows’ caramelization. I use my Pyrex Basics dish; it’s durable and handles temperature changes beautifully. Avoid metal pans, as they can cause uneven browning. 💡
Mixing Bowls Matter
A large, wide mixing bowl (at least 4-quart capacity) gives you room to fold the sweet potato mixture without spilling. I prefer stainless steel for its sturdiness and ease of cleaning. The wide base also helps the potatoes cool slightly before baking.
Precision Tools
A sharp chef’s knife (I use an 8-inch Wüsthof) makes quick work of peeling and cubing the sweet potatoes. Pair it with a cutting board with a groove to catch any juice. For even cubes, aim for 1-inch pieces—this ensures consistent cooking.
Whisk and Spatula
A balloon whisk blends the butter, sugar, and spices smoothly, while a silicon spatula scrapes every last bit of mixture into the dish. I love the OXO Good Grips line for both—they’re comfortable and built to last.
Oven Thermometer
Don’t trust your oven’s built-in thermometer. A hanging oven thermometer (like Taylor’s) ensures your 375°F is accurate. Marshmallows burn easily, so precise temperature control is key. I check mine every few months to stay on track.
Broiler Watch
If you broil the marshmallows for extra browning, keep the oven door slightly ajar and watch closely. Use heat-resistant oven mitts (I like Rachael Ray’s) to adjust the rack or dish safely. The marshmallows can go from golden to burnt in under 30 seconds. 🔥
Nutrition Facts
Frequently Asked Questions
Can I make this ahead of time?
Yes! Assemble everything except the marshmallows, cover, and refrigerate for up to 24 hours. Add marshmallows and bake just before serving for best results.
Why did my marshmallows burn?
Marshmallows toast quickly at 375°F. Check at 18 minutes and broil briefly for extra browning if needed. Oven hot spots can cause uneven cooking.
Can I use canned sweet potatoes?
Drain and mash 40 oz canned sweet potatoes to replace fresh. Reduce sugar slightly as canned versions are often pre-sweetened.
How do I make this dairy-free?
Swap the butter for coconut oil (same amount). Use dairy-free marshmallows like Dandies. The flavor and texture remain just as delicious.
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