This showstopping sweet potato casserole rivals the legendary Ruth’s Chris version, with a creamy, buttery sweet potato base topped with a crunchy pecan streusel that’s absolutely irresistible. I’ve perfected this recipe over years of holiday gatherings, and it’s become the dish everyone requests. The secret lies in using fresh sweet potatoes, real butter, and a balance of warm spices that complement rather than overpower the natural sweetness of the potatoes.
This isn’t your grandmother’s candied yams with marshmallows—though there’s nothing wrong with that! This version is more sophisticated, with a velvety texture and sophisticated flavor profile that makes it equally at home at an elegant dinner party or a casual family feast. The casserole can be prepared the day before, making it perfect for holiday meal planning. Simply cover and refrigerate, then bake as directed, adding just a few extra minutes to the cooking time.
What makes this Ruth’s Chris-inspired version so special is the attention to detail in every layer. The sweet potato base is enriched with brown sugar, cinnamon, nutmeg, and a hint of vanilla, creating depth and warmth. The pecan topping provides textural contrast with its buttery, crispy crunch. I’ve included tips for selecting the best sweet potatoes and techniques for achieving the perfect consistency.
Whether you’re cooking for Thanksgiving, Christmas, or any special occasion, this crowd-pleasing casserole will become your go-to recipe. Pair it with buttery biscuits for a complete side dish spread. The beauty of this dish is its versatility—you can make it ahead, reheat it gently, and it maintains its gorgeous texture and flavor. Many home cooks compare their homemade versions favorably to restaurant versions, and with this recipe, yours will too.
I’ve also included variations and substitutions throughout this guide. If you prefer less pecans or want to add marshmallows for a more traditional twist, you absolutely can. Some families love adding a touch of bourbon or orange zest for complexity. The foundation recipe here is foolproof and elegant, but it’s also flexible enough to make it your own. Visit Bon Appétit for more elevated side dish inspiration, or check out Serious Eats for the science behind perfect casserole textures.
Ingredients
- 4 pounds fresh sweet potatoes
- 8 tablespoons (1 stick) unsalted butter, divided
- 1/2 cup heavy cream, warmed
- 1/4 cup whole milk, warmed
- 3/4 cup packed light brown sugar
- 1/2 teaspoon ground cinnamon
- 1/4 teaspoon ground nutmeg
- 1/8 teaspoon ground ginger
- 1/4 teaspoon sea salt
- 1 teaspoon pure vanilla extract
- 2 large eggs, room temperature
- 1 cup raw pecan halves, roughly chopped
- 1/2 cup all-purpose flour
- 1/2 cup packed light brown sugar (for topping)
- 4 tablespoons cold unsalted butter, cubed
- 1/4 teaspoon sea salt (for topping)
Instructions
- Preheat your oven to 350°F. Scrub the sweet potatoes under running water and prick each one several times with a fork to allow steam to escape during baking.
- Place the pricked sweet potatoes directly on the oven rack with a baking sheet positioned on the lower rack to catch any drips. Bake for 45-50 minutes, until the potatoes are completely tender when pierced with a knife and the skin yields easily to pressure.
- Remove the baked sweet potatoes from the oven and let them cool for 5-10 minutes until they’re cool enough to handle but still warm. This makes peeling much easier.
- Once cooled slightly, cut each sweet potato in half lengthwise and scoop the soft flesh into a large mixing bowl, discarding the skin. You should have approximately 3 cups of cooked sweet potato.
- Add 4 tablespoons of softened butter to the warm sweet potatoes and mash together using a potato masher or wooden spoon until you reach your desired consistency. I prefer a slightly chunky texture, but you can make it as smooth or rustic as you like.
- In a small bowl, whisk together the cinnamon, nutmeg, ginger, and 1/4 teaspoon salt. Add this spice mixture to the sweet potato mixture and stir well to combine.
- Pour the warmed heavy cream and milk into the sweet potato mixture, stirring gently to incorporate. The warm dairy will help create a smooth, creamy consistency.
- Add the brown sugar and vanilla extract to the mixture, stirring until completely combined. The mixture should be creamy but still hold its shape.
- In a separate bowl, whisk the room-temperature eggs together. Slowly add the whisked eggs to the sweet potato mixture while stirring constantly to temper them and prevent scrambling. Stir until the eggs are fully incorporated and the mixture is smooth and uniform.
- Pour the sweet potato mixture into a well-buttered 9×13-inch baking dish, smoothing the top with a spatula to create an even layer.
- In a medium bowl, combine the chopped pecans, flour, brown sugar for topping, and salt. Mix these dry ingredients together with a fork.
- Add the 4 tablespoons of cold cubed butter to the pecan mixture. Using a pastry cutter, two knives, or your fingertips, work the cold butter into the mixture until it resembles coarse breadcrumbs with some pea-sized pieces of butter still visible.
- Sprinkle the pecan topping evenly over the sweet potato layer, breaking up any large clumps as you distribute it. Don’t press it down—you want it to remain loose and crispy.
- Place the assembled casserole on a baking sheet (to catch any potential drips). Bake at 350°F for 35-40 minutes, until the pecan topping is golden brown and the edges of the sweet potato mixture are bubbling slightly around the sides.
- Remove the casserole from the oven and let it rest for 10 minutes before serving. This resting time allows the custard-like filling to set slightly while the topping remains crispy.
- Serve warm, spooning generous portions that include both the creamy sweet potato base and the crunchy pecan topping. Leftovers can be covered and refrigerated for up to 4 days.
Pro Tips
- SELECTING SWEET POTATOES: Choose potatoes that are medium to large in size with unblemished skin. Avoid any with soft spots or sprouting. Orange-fleshed varieties like Beauregard or Jewel work best for this recipe, providing the ideal color and texture.
- MAKE-AHEAD INSTRUCTIONS: This casserole can be prepared entirely the day before serving. Assemble it completely, cover with plastic wrap or foil, and refrigerate overnight. When ready to bake, add 5-10 minutes to the baking time since it will start from a cold temperature. You can also prepare the sweet potato filling and pecan topping separately, then assemble and bake when ready.
- TEXTURE TIPS: For a silkier, more refined texture similar to Ruth’s Chris, press the cooked sweet potatoes through a ricer or fine-mesh sieve before adding the other ingredients. If you prefer a chunkier, more rustic version, mash them less thoroughly. The key is consistency—don’t overmix once you’ve added the eggs, as this can make the casserole dense.
- SPICE ADJUSTMENTS: If you prefer a more pronounced spice flavor, increase the cinnamon to 3/4 teaspoon. For a more subtle spice profile, reduce to 1/4 teaspoon. A tiny pinch of cloves adds depth, though use sparingly as it can easily overpower the dish.
- PECAN TOPPING VARIATIONS: Substitute walnuts or a combination of pecans and walnuts if desired. For a crunchier topping, add 2 tablespoons of granulated sugar to the pecan mixture. Some families love adding mini marshmallows on top during the last 5 minutes of baking for a hybrid version.
- DAIRY SUBSTITUTIONS: If you don’t have heavy cream, use half-and-half or additional whole milk, though the result will be slightly less rich. For dairy-free, use full-fat coconut milk or cashew cream warmed to the same temperature.
- STORAGE AND REHEATING: Store any leftovers covered in the refrigerator for up to 4 days. Reheat gently, covered with foil at 325°F for 15-20 minutes to prevent the topping from becoming too dark. You can also reheat individual portions in the microwave, though this may soften the topping slightly.
- SEASONING FRESHNESS: Use fresh spices for the best flavor. Spices lose potency over time, so if your cinnamon or nutmeg has been in your cabinet for over a year, consider replacing them for superior results.
- BUTTER QUALITY MATTERS: Use real butter, not margarine or butter substitutes. The flavor difference is significant and will be noticeable in this delicate dish. Cold butter is essential for the pecan topping to achieve that desired crispy, crumbly texture.
- CROWD PLEASING: This recipe consistently impresses both traditionalists and those seeking something more sophisticated than standard candied yams. The balance of creamy filling and crispy topping appeals to all ages and preferences.