Sweet Potato Cake

If carrot cake and pumpkin bread had a cozy little dessert baby, it would be sweet potato cake. You get that deep, caramel-like sweetness from the potatoes, a plush crumb that stays moist for days, and enough warm spice to make your kitchen smell like you know exactly what you are doing.

This version is streamlined for home cooks: a simple two-bowl, no-mixer method for the cake, an easy way to cook the sweet potatoes, and a frosting that tastes bakery-level without extra fuss. I also built it to be flexible, because sweet potatoes vary and so do our pantries.

Why this recipe works

• Sweet potato puree keeps it moist without making it heavy. The starches hold onto water so the crumb stays tender even after day two.
• Oil in the cake plus brown butter in the frosting gives richness where you want it. Oil makes a softer cake than all butter, while browned butter adds nutty depth up top.
• Brown sugar and warm spices lean into sweet potato’s natural caramel notes.
• Simple mixing method means less chance of overworking the batter.

Ingredient notes

Below is what I consider the ideal lineup. A few thoughtful swaps are included, because I would rather you bake a great cake with what you have than abandon the plan at 6 pm.

For the sweet potato cake

• Sweet potato puree: Use homemade (recommended) or canned if you can find plain sweet potato. Avoid sweet potato pie filling. Shopping note: 2 cups puree is usually about 2 medium-large sweet potatoes (roughly 1 1/4 to 1 1/2 lb / 565 to 680 g raw), depending on size and moisture.
• All-purpose flour: Reliable, tender crumb.
• Baking powder + baking soda: Lift and a little browning.
• Ground cinnamon plus ginger and nutmeg: Cozy and balanced.
• Fine salt: Makes the sweetness taste more like sweet potato and less like sugar.
• Brown sugar + granulated sugar: Brown sugar for moisture and caramel notes, white sugar for a clean sweetness and structure.
• Neutral oil: Avocado, canola, grapeseed, or sunflower.
• Eggs: Structure and richness.
• Vanilla: Rounds everything out.
• Optional add-ins: Toasted pecans, walnuts, or a handful of raisins.

For brown butter maple cream cheese frosting

• Unsalted butter: We brown it for a toasted, nutty flavor.
• Cream cheese: Full-fat for stability and flavor.
• Powdered sugar: Sweetens and thickens.
• Maple syrup: A little goes a long way. Use real maple syrup.
• Salt + vanilla: Non-negotiable for balance.

Equipment you will need

• 9 x 13-inch pan (easiest), or two 8-inch round pans
• Parchment paper (optional, for easy lifting)
• Two mixing bowls (or one bowl plus a large measuring jug)
• Whisk
• Spatula
• Toothpick (for doneness)
• Optional: instant-read thermometer (to check for about 200 to 205°F in the center)
• Small saucepan (to brown the butter)
• Heat-safe bowl (to cool the brown butter)
• Hand or stand mixer (easiest for frosting), or a sturdy whisk
• Optional: offset spatula (for frosting)
• Optional: fine-mesh sieve (to drain wet puree)
• Optional: food processor (to blitz puree smooth)

Pro tips

• Roast for the best puree: Roasting drives off excess moisture and concentrates flavor, which helps the cake bake up tall instead of gummy.
• Drain if needed: If your puree looks wet or loose, drain it in a fine-mesh sieve 10 to 15 minutes, then stir until thick and smooth.
• Don’t overmix: Fold the batter just until you stop seeing dry streaks.
• Use doneness cues: Aim for a toothpick with moist crumbs, not wet batter. If you like numbers, the center is typically done around 200 to 205°F.
• Cool completely before frosting: Frosting on a warm cake will slide.
• For clean slices: Chill the frosted cake 20 minutes before cutting.
• Toast your nuts: Toast until fragrant, then cool before adding. Toasting is the difference between “fine” and “wow.”

Substitutes that work

• Sweet potato puree: Use homemade (recommended) or plain canned sweet potato puree if available. Avoid sweet potato pie filling.
• Cooking method for puree: If you cannot roast, you can microwave the sweet potatoes until very soft, then scoop and mash (drain in a sieve if the puree is wetter).
• Less-sweet option: Reduce the granulated sugar to 1/4 cup and keep the brown sugar as is.
• Frosting sweetness: Start with 2 1/2 cups powdered sugar and stop there if it tastes balanced.
• Dairy-free direction: Skip the cream cheese frosting and use a simple maple glaze (powdered sugar + maple syrup + a pinch of salt).

Variations

• Orange zest + cardamom: Add zest of 1 orange to the wet ingredients and swap nutmeg for 1/2 tsp cardamom.
• Bourbon pecan: Add 1 tbsp bourbon to the batter and fold in toasted pecans.
• Chocolate twist: Fold in 3/4 cup mini chocolate chips. Keep the frosting less sweet and add an extra pinch of salt.
• Dairy-free: Skip the cream cheese frosting and use a simple maple glaze (powdered sugar + maple syrup + a pinch of salt).

Serving ideas

For a dinner-party moment with almost no extra work: chill the frosted cake for clean slices, then serve with strong coffee and a pinch of flaky salt sprinkled over each piece. Sweet potato loves salt, and it makes the maple frosting taste even more maple-y.

Storage and reheating

Storage

• Frosted cake: Store covered in the fridge for up to 5 days. For the best texture, let slices sit at room temperature 20 to 30 minutes before eating.
• Unfrosted cake: Cover tightly at room temperature for up to 2 days. If your kitchen runs warm or humid, refrigerate after day 1. (This cake is very moist, and moisture loves to attract trouble.)

Make-ahead

• Sweet potato puree: Make up to 5 days ahead and refrigerate. Stir well before using.
• Freeze the cake layer: Wrap unfrosted cake tightly and freeze up to 2 months.
• Frosting: Make 2 days ahead and refrigerate. Let it soften slightly, then re-whip briefly for a fluffy texture.

Freezing frosted cake

You can freeze frosted slices. Place slices on a tray, freeze until firm, then wrap well. Thaw overnight in the fridge for the cleanest texture.

Common mistakes

• Using too-wet puree: This can make the cake dense or gummy. Roast for thicker puree, or drain in a fine-mesh sieve 10 to 15 minutes if needed.
• Overmixing the batter: Fold just until combined to avoid a heavy texture.
• Frosting while the cake is warm: The frosting can slide right off. Cool completely first.
• Making runny frosting: Butter that is too hot or cream cheese that is too warm can thin it out. Chill 15 to 30 minutes, then re-whip.
• Skipping salt: The cake can taste flat if you do not add the full salt amount.
• Using canned yams in syrup: Not recommended; it throws off sweetness and moisture.

FAQ

Is sweet potato cake the same as pumpkin cake?

They are cousins. Sweet potato is often sweeter and can be a little denser, with a caramel-like flavor. Pumpkin tends to be milder, and the moisture level can vary by variety and brand, especially with canned pumpkin, so recipes are not always 1:1 interchangeable.

Can I use canned yams?

I do not recommend it. Canned yams are usually packed in syrup, which throws off the sweetness and moisture. Look for plain canned sweet potato puree, or roast fresh sweet potatoes.

Do I have to peel the sweet potatoes?

If you roast them whole, you do not need to peel first. Just scoop out the flesh after roasting. Less mess, less waste.

What nuts are best?

Pecans are my favorite with sweet potato. Toast them first until fragrant, then cool before adding. Toasting is the difference between “fine” and “wow.”

Can I make it less sweet?

Yes. Reduce the granulated sugar to 1/4 cup and keep the brown sugar as is. For the frosting, start with 2 1/2 cups powdered sugar and stop there if it tastes balanced to you.

The recipe

Sweet Potato Cake

A streamlined, two-bowl sweet potato sheet cake (or layer cake) with warm spices and a brown butter maple cream cheese frosting. Designed for thick, smooth sweet potato puree and a moist crumb that stays tender for days.

Prep

25 minutes

Cook

30 to 40 minutes

Total

About 1 hour 30 minutes (plus cooling)

Yield

Makes one 9 x 13-inch cake (or two 8-inch rounds)

Print recipe

Ingredients

• 2 1/2 cups (300 g) all-purpose flour
• 2 tsp baking powder
• 1 tsp baking soda
• 2 tsp ground cinnamon
• 1 tsp ground ginger
• 1/2 tsp ground nutmeg
• 1 tsp fine salt
• 1 cup (200 g) packed light brown sugar
• 1/2 cup (100 g) granulated sugar
• 1 cup (240 ml) neutral oil
• 4 large eggs, room temperature if possible
• 2 cups (about 450 to 500 g, depending on thickness) sweet potato puree, thick and smooth
• 2 tsp vanilla extract
• Optional: 1 cup toasted chopped pecans or walnuts
• Brown butter maple cream cheese frosting:
• 1/2 cup (113 g) unsalted butter
• 8 oz (226 g) full-fat cream cheese, cool room temperature (not warm)
• 2 1/2 to 3 cups (300 to 360 g) powdered sugar, sifted if lumpy
• 2 to 3 tbsp maple syrup
• 1 tsp vanilla extract
• 1/4 tsp fine salt

Instructions

1. Prep the pan and oven. Heat oven to 350°F. Grease a 9 x 13-inch pan and line with parchment if you want easy lifting.

2. Mix dry ingredients. In a large bowl, whisk flour, baking powder, baking soda, cinnamon, ginger, nutmeg, and salt until evenly combined.

3. Mix wet ingredients. In a second bowl (or a large measuring jug), whisk brown sugar, granulated sugar, oil, and eggs until glossy and well blended. Whisk in sweet potato puree and vanilla.

4. Combine. Pour wet into dry and fold with a spatula just until you stop seeing dry streaks. If using nuts, fold them in now. The batter will be thick.

5. Bake. Spread batter evenly in the pan. Bake 30 to 40 minutes, until a toothpick in the center comes out with a few moist crumbs. If the toothpick is wet with batter, keep going. Optional temp check: the center is typically done around 200 to 205°F.

6. Cool completely. Let the cake cool in the pan.

7. Brown the butter. Melt butter in a small saucepan over medium heat. Cook, stirring often, until it smells nutty and you see brown bits at the bottom, 3 to 6 minutes. Pour into a heat-safe bowl, including the browned bits, and cool until barely warm to the touch, not hot.

8. Beat cream cheese. In a bowl, beat cream cheese until smooth. A hand or stand mixer is easiest here, but you can do it with a sturdy whisk and some determination.

9. Add butter, then sugar. Beat in cooled brown butter. Add powdered sugar gradually, then maple syrup, vanilla, and salt. Adjust consistency with a bit more sugar (thicker) or a tiny splash of maple syrup (looser).

10. Frost. Spread over cooled cake. For clean slices, chill 20 minutes before cutting.

Notes

• Sweet potato puree: Thick, smooth puree matters. If your puree looks wet or loose, drain it in a fine-mesh sieve set over a bowl for 10 to 15 minutes, then stir until thick and smooth.
• How to roast sweet potatoes for puree: Heat oven to 400°F. Scrub 2 medium-large sweet potatoes and poke each several times with a fork. Roast directly on the rack with a sheet pan on the lower rack to catch drips, 45 to 70 minutes, until very soft (a paring knife should slide in with zero resistance). Cool, split, scoop, then mash until smooth or blitz briefly in a food processor.
• Shortcut puree options: Microwave until very soft, then scoop and mash (drain if needed). Or use plain canned sweet potato puree (not sweetened or spiced) and stir well.
• Pan sizes and bake times: 9 x 13-inch: 30 to 40 minutes. Two 8-inch rounds: 28 to 35 minutes. Two 9-inch rounds: start checking at 24 minutes (usually 26 to 35 minutes). Bundt pan: 45 to 60 minutes (grease thoroughly and flour). Cupcakes: 18 to 22 minutes.
• Layer cake notes: Let layers cool 10 minutes in the pan, then turn out onto a rack to cool completely before frosting. The frosting amount is generous for a 9 x 13-inch cake; for a two-layer 8-inch cake it makes a thinner coat. For taller swirls and thicker sides, make 1 1/2 times the frosting.
• If frosting is runny: Likely butter too hot or cream cheese too warm. Chill frosting 15 to 30 minutes, then re-whip; add a bit more powdered sugar if needed.
• If the cake tastes flat: Use the full salt amount. A teaspoon of lemon juice in the frosting can also perk everything up if your maple syrup is very sweet.

Nutrition

• Calories: ~620
• Fat: ~33 g
• Carbs: ~74 g
• Protein: ~8 g
• Fiber: ~3 g
• Sugar: ~44 g
• Sodium: ~360 mg

Approximate values per serving (assuming 12 servings, including frosting and optional nuts not included).