Sweet Potato Casserole Recipe With Measurements: Crispy Celery Crown Over Nutty Spiced Roast

This sweet potato casserole recipe with measurements delivers the perfect balance of crispy celery crown and nutty spiced roast—every bite combines tender sweet potatoes with a golden, crunchy topping that holds up beautifully.

The secret lies in precise measurements and oven timing, transforming simple ingredients into a showstopping side dish that steals the spotlight at holiday tables. I've perfected this recipe over years of testing, ensuring the sweet potatoes stay moist while the celery topping achieves that coveted caramelized crispness.

The foundation begins with properly cooked sweet potatoes—creamy and seasoned just right—then topped with a mixture of crushed celery, breadcrumbs, and warm spices that create a textural contrast no one can resist.

What sets this apart is the nutty depth from brown sugar and cinnamon, balanced by the earthy crunch of the celery crown. The measurements are critical: too much flour makes the topping dry, while proper baking time ensures the perfect golden-brown finish.

By the time it emerges from the oven, you'll have a casserole that's visually stunning with its golden crown and tender base, plus an aroma that fills your kitchen with warm, comforting spices.

The texture combination—soft potatoes beneath crispy topping—makes each bite satisfying, while the sweet-spiced flavor profile works beautifully alongside roasted meats or as a vegetarian centerpiece.

This recipe serves 8-10 and comes together in under 1 hour, with most of that time being hands-off baking. The crispy topping stays crunchy even when reheated, making it ideal for meal prep or holiday gatherings. Here's everything you need to recreate this crowd-pleasing classic in your own kitchen.

Ingredients for sweet potato casserole recipe with measurements

Precision-measured ingredients transform humble sweet potatoes into a holiday-worthy casserole with perfect crispy crown.

The sweet potatoes are the foundation—organic Yukon Golds from Whole Foods or Trader Joe's deliver the best texture, though any orange-fleshed variety works. Peel and cube them uniformly for even cooking; larger pieces stay tender while smaller ones crisp. For the celery crown, fresh celery stalks are essential—avoid pre-chopped mixes, which often contain fillers. Toast your spices lightly in a dry pan before mixing to deepen their aroma, especially the cinnamon and nutmeg, which carry the signature warmth of this dish. The butter should be cold when cubbed for the topping, ensuring optimal crispness during baking.

No panko? Crushed cornflakes or seasoned breadcrumbs work in a pinch, though texture will differ slightly. Substitute brown sugar with maple syrup at half the amount for a more liquid topping, but reduce flour by 1 tbsp to maintain structure. For dairy-free needs, coconut cream replaces heavy cream and unsweetened almond milk replaces evaporated milk, though the texture will be lighter. The vanilla extract can be swapped for vanilla bean paste for added richness, or omitted entirely if you prefer a more subtle sweetness. Pre-chopped celery loses moisture quickly—buy whole stalks and chop yourself for the best results.

Pre-cooked sweet potatoes can be refrigerated for 3 days before assembling, while the dry topping ingredients stay fresh for 2 weeks in airtight containers. Once baked, the casserole reheats beautifully—cover loosely with foil and bake at 350°F for 15-20 minutes to restore crispness. For make-ahead holiday prep, assemble the dish 24 hours before baking and refrigerate uncovered; the topping will dry slightly but re-crisp perfectly during baking. Portion into individual ramekins for elegant serving, or keep whole for easy slicing.

Step-by-step instructions for sweet potato casserole with measurements

Here's the method for achieving that signature crispy celery crown over tender, spiced sweet potatoes.

Preheat your oven to 375°F. Peel and cut the 3 lb large sweet potatoes into even 1-inch cubes—consistent size ensures uniform cooking. Spread them out on two rimmed baking sheets, leaving space between each cube for even browning.

Drizzle the potatoes with 2 tablespoons of the 0.5 cup unsalted butter, then sprinkle evenly with ½ teaspoon of the 0.5 tsp salt, 1 teaspoon of the 2 tsp ground cinnamon, and ¼ teaspoon of the 0.5 tsp ground nutmeg. Toss gently to coat, then roast for 25-30 minutes until tender when pierced with a fork and lightly golden.

In a large mixing bowl, combine the roasted sweet potatoes with the remaining 0.33 cup unsalted butter, 0.25 cup heavy cream, 0.5 cup evaporated milk, and 1 tsp vanilla extract. Mash until smooth but slightly textured—you want a thick, spreadable consistency, not a puree. Stir in the remaining 1 teaspoon of the 2 tsp ground cinnamon and ¼ teaspoon of the 0.5 tsp ground nutmeg.

Transfer the mixture to a greased 9x13-inch baking dish and spread evenly. The filling should be about ½-inch thick—this ensures proper browning when topped. Sprinkle the top with the 1 cup light brown sugar and 0.25 cup granulated sugar for that caramelized finish.

Finely chop the 1.5 lb fresh celery stems into small pieces—think ⅛-inch dice. In a separate bowl, whisk together the 1.5 cups panko breadcrumbs and 0.5 cup all-purpose flour. Add the chopped celery and toss until evenly distributed. The mixture should look like coarse, wet sand.

Spread the celery mixture evenly over the sweet potato filling, pressing down gently to ensure contact with the top layer. This ensures maximum crispiness when baked. The topping should be about ¼-inch thick—don't make it too heavy or it won't crisp properly.

Return the baking dish to the oven and bake for 25-30 minutes at 375°F until the celery crown is deep golden brown and crispy. You'll know it's ready when the edges pull away slightly from the pan and the top has a caramelized sheen. Watch closely in the last few minutes—overbrowning happens fast.

Let the casserole rest for 10 minutes before serving. This resting period allows the filling to set slightly, making it easier to slice and serve. The contrast between the crispy celery crown and the creamy, spiced sweet potatoes is what makes this dish unforgettable.

Storing and reheating your leftovers

Refrigerator Storage

Store your baked casserole in an airtight container with a loose lid for up to 4 days—the crispy celery crown will stay crunchy if you refrigerate it uncovered for the first 2 hours to dry slightly.

I use a glass Pyrex dish with a vented lid to prevent sogginess. The filling remains creamy and flavorful, but the topping may lose some crunch if left too long. 🥥

Freezer Prep Tips

For long-term storage, assemble the casserole unbaked and freeze it in a single layer on a baking sheet for 1 hour before transferring to a freezer bag. This prevents ice crystals.

Thaw overnight in the fridge before baking—add 10-15 extra minutes to the baking time to restore crispness. Label with the date to track freshness. ❄️

Oven Reheating

Preheat your oven to 350°F and cover the casserole loosely with aluminum foil for 15 minutes, then remove the foil for the final 5-10 minutes to re-crisp the celery crown.

A light spray of water on the topping before reheating helps restore crunch. For best results, use the same 9x13-inch baking dish to maintain even heating. 🔥

Microwave Shortcut

For quick reheating, cover the casserole with a damp paper towel and microwave on 50% power in 1-minute intervals, stirring between each. Add 1 tablespoon of water or milk to prevent drying. The texture won’t be as crispy as oven-reheated, but it’s perfect for a fast meal. 💡

Make-Ahead Holiday Hack

Assemble the casserole 24 hours ahead and refrigerate uncovered—this dries the topping slightly for extra crispiness when baked. Bake straight from the fridge at 375°F for 35-40 minutes. For large gatherings, portion into ramekins and bake individually for 15-20 minutes at 350°F. 🎄

Crispy Topping Rescue

If the celery crown loses crispness after reheating, broil for 2-3 minutes on high—watch closely to avoid burning. A quick toaster oven on high heat works too. For extra crunch, sprinkle with extra panko before reheating and broil until golden. 🌟

Frequently asked questions about sweet potato casserole