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Grandma's Cozy Sweet Potato Casserole

By Grandma Millie

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Sweet potato recipes feature Grandma's Cozy Sweet Potato Casserole with a creamy filling and golden pecan oat topping.

There is something comforting about a dish of sweet potatoes bubbling in the oven, just like the one Grandma brought to Sunday supper. Creamy, warmly spiced potatoes meet a buttery pecan and oat topping in this homespun casserole, making every spoonful taste like a little memory from her kitchen.

Prep: 25 minutes
Cook: 50 minutes
Total: 1 hour 15 minutes
Serves: 8
Calories: 430

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Grandma's Cozy Sweet Potato Casserole

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Prep Time
25 mins
Cook Time
50 mins
Total Time
1 hr 15 mins
Servings: 8
Course: Main dish
Cuisine: American
Calories: 430

Ingredients

  • 3 pounds sweet potatoes, peeled and cut into 1-inch pieces
  • 6 tablespoons unsalted butter, divided
  • 1/2 cup whole milk
  • 2 large eggs
  • 1/3 cup packed brown sugar
  • 1 teaspoon ground cinnamon
  • 1/2 teaspoon ground nutmeg
  • 1 teaspoon vanilla extract
  • 1/2 teaspoon salt
  • 3/4 cup chopped pecans
  • 1/2 cup old-fashioned rolled oats
  • 1/4 cup all-purpose flour
  • 2 tablespoons packed brown sugar

Equipment

  • 9x13-inch baking dish — Use a glass or ceramic dish for even baking.
  • Large pot — Choose one large enough to hold the sweet potatoes and water.
  • Large mixing bowl — Use it for mashing and combining the sweet potato filling.
  • Small mixing bowl — Use it to prepare the pecan topping.
  • Potato masher — A sturdy masher gives the filling a pleasantly rustic texture.

Method

  1. 1

    Preheat the oven to 375°F.

  2. 2

    Grease a 9x13-inch baking dish with 1 tablespoon of butter.

  3. 3

    Place the sweet potatoes in a large pot.

  4. 4

    Cover the sweet potatoes with cool water.

  5. 5

    Boil the sweet potatoes for 15 to 20 minutes until tender.

  6. 6

    Drain the sweet potatoes thoroughly.

  7. 7

    Mash the sweet potatoes with the milk, 3 tablespoons of melted butter, eggs, brown sugar, cinnamon, nutmeg, vanilla, and salt.

  8. 8

    Spread the sweet potato mixture in the prepared baking dish.

  9. 9

    Stir the pecans, oats, flour, remaining brown sugar, and remaining melted butter in a bowl.

  10. 10

    Sprinkle the pecan topping over the sweet potatoes.

  11. 11

    Bake the casserole for 25 to 30 minutes until the topping is golden and the edges are bubbling.

Notes

NutrientAmount per Serving
Calories430
Fat21g
Protein7g
Carbs58g

Why You'll Love This Sweet Potato Recipes

  • It brings creamy, warmly spiced comfort to the dinner table.
  • A buttery pecan and oat topping adds a lovely golden crunch.
  • The simple ingredients make it one of those sweet potato recipes you'll return to often.
  • It is hearty enough for a main dish and easy to share with family.
  • You can prepare much of it ahead for a relaxed meal.

Ingredients

Sweet potato recipes ingredients arranged on a wooden kitchen table with pecans, oats, spices, eggs, milk, butter, and flour
A colorful ingredient spread for sweet potato recipes, featuring fresh produce, baking staples, warming spices, and pecans.

Gather these humble ingredients for a cozy casserole with tender sweet potatoes, gentle spices, and a crisp, buttery topping.

  • Sweet potatoes - 3 pounds, peeled and cut into 1-inch pieces
  • Unsalted butter - 6 tablespoons, divided
  • Whole milk - 1/2 cup
  • Large eggs - 2
  • Brown sugar - 1/3 cup packed, for the sweet potato mixture
  • Ground cinnamon - 1 teaspoon
  • Ground nutmeg - 1/2 teaspoon
  • Vanilla extract - 1 teaspoon
  • Salt - 1/2 teaspoon
  • Chopped pecans - 3/4 cup
  • Old-fashioned rolled oats - 1/2 cup
  • All-purpose flour - 1/4 cup
  • Brown sugar - 2 tablespoons packed, for the topping

How to Make Sweet Potato Recipes

Sweet potato recipes shown in a four-panel photo collage from boiling and mashing to topping and baking a sweet potato dish.
Sweet potato recipes come together through simple preparation, spiced mashing, nut topping, and oven baking.

Plan on 25 minutes of preparation and 50 minutes of cooking. There is no extra resting time required, though letting the casserole sit for a few minutes before serving makes it easier to spoon.

Step 1: Preheat the Oven

Preheat the oven to 375°F so it is ready when the casserole is assembled.

Step 2: Grease the Baking Dish

Use 1 tablespoon of butter to grease a 9x13-inch baking dish. Coat the bottom and sides lightly so the casserole serves neatly.

Step 3: Add the Sweet Potatoes

Place the peeled and cut sweet potatoes in a large pot. Keeping the pieces close in size helps them cook evenly.

Step 4: Cover with Water

Pour cool water over the sweet potatoes until they are covered. Starting with cool water helps the pieces soften evenly as the pot heats.

Step 5: Boil Until Tender

Bring the water to a boil and cook the sweet potatoes for 15 to 20 minutes. They are ready when a fork slides into the centers without resistance.

Step 6: Drain Thoroughly

Drain the sweet potatoes well. Removing excess water keeps the finished casserole creamy rather than loose.

Step 7: Mash the Sweet Potato Mixture

Mash the sweet potatoes with the milk, 3 tablespoons of melted butter, eggs, brown sugar, cinnamon, nutmeg, vanilla, and salt. Stir until the mixture is smooth and well combined, leaving a little texture if you like a home-style finish.

Step 8: Fill the Baking Dish

Spread the sweet potato mixture evenly in the prepared baking dish. Smooth the top gently with a spoon.

Step 9: Make the Pecan Topping

In a bowl, stir together the pecans, oats, flour, remaining brown sugar, and remaining melted butter. The mixture should look crumbly and evenly moistened.

Step 10: Add the Topping

Sprinkle the pecan topping evenly over the sweet potatoes. Covering the surface from edge to edge gives every serving a bit of golden crunch.

Step 11: Bake the Casserole

Bake for 25 to 30 minutes, until the topping is golden and the edges are bubbling. Watch closely near the end so the pecans do not overbrown.

Recipe Snapshot

FeatureDetails
Category/CourseDinner, Main dish
CuisineAmerican
Prep Time25 minutes
Cook Time50 minutes
Extra Time0 minutes
Total Time1 hour 15 minutes
DietaryVegetarian
Serves8
Best ServedWarm, with a little time to settle before serving

Pro Tips for Making Sweet Potato Recipes

  • Cut the sweet potatoes into evenly sized pieces so they finish boiling at the same time.
  • Drain the potatoes thoroughly before mashing to keep the filling rich and creamy.
  • Melt the butter before measuring the portions for the filling and topping.
  • For an especially smooth filling, mash the potatoes while they are still warm.
  • Let the casserole sit for a few minutes after baking so the bubbling edges can settle.

How to Serve Sweet Potato Recipes

sweet potato recipes served with green salad, vegetables, soup, and toasted pecans
Sweet potato recipes shine in a generous meal surrounded by fresh greens, tender vegetables, soup, and crunchy pecans.
  • Serve it warm as the centerpiece of a cozy vegetarian dinner.
  • Pair it with a crisp green salad or steamed green beans for balance.
  • Add roasted carrots or a simple vegetable soup for a comforting supper spread.
  • Offer extra toasted pecans at the table for anyone who enjoys more crunch.

Make Ahead and Storage

Storing Leftovers

  • Cool leftovers promptly, then cover the baking dish or transfer portions to an airtight container.
  • Refrigerate for up to 3 to 4 days.
  • Store the casserole within 2 hours of cooking for food safety.

Freezing

  • Freeze cooled portions in freezer-safe containers for up to 2 months.
  • For the best topping texture, freeze the sweet potato filling separately from the pecan topping when possible.
  • Thaw frozen portions in the refrigerator overnight before reheating.

Reheating

  • Reheat covered in a 350°F oven until hot throughout, usually 20 to 30 minutes for a larger portion.
  • Uncover during the last few minutes to help the topping crisp again.
  • Small portions can be reheated in the microwave in short intervals, stirring only the filling as needed.

Explore more easy breakfast recipes, quick lunch ideas, cozy dinner meals, tasty snacks, and delightful dessert.

Final Thoughts

This cozy sweet potato casserole has the kind of warm, familiar flavor that makes an ordinary dinner feel like a family gathering.

FAQs

Here are a few helpful answers for making this comforting casserole just right.

Can I prepare this casserole ahead of time?

Yes. Assemble the casserole, cover it, and refrigerate it for up to 24 hours before baking. Let it sit at room temperature briefly while the oven preheats, then bake until hot and bubbling.

Can I use canned sweet potatoes?

Fresh sweet potatoes give the best texture, but drained canned sweet potatoes can work in a pinch. Mash them well and reduce any added liquid if they seem especially moist.

How can I make the topping nut-free?

Replace the pecans with additional rolled oats or use sunflower seeds if your family enjoys them. Check all labels when cooking for someone with a serious allergy.

Can I make this casserole less sweet?

Yes. Reduce the brown sugar in the sweet potato mixture to taste, while keeping the topping amount the same or reducing it slightly for a more savory casserole.

Kitchen notes

Nutrition & sources

Calorie and nutrition figures on this page are estimates meant for general home-cooking guidance. Actual values vary with brands, portion size, and how the recipe is prepared.

Estimates draw on typical ingredient data from public nutrition databases such as the USDA FoodData Central. They are not a substitute for professional medical or dietary advice.

For how recipes are tested and when pages are updated, see How we test recipes. Full legal context lives in our disclaimers and affiliate disclosure.

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