Sweet Potato Invisible Cake
This Sweet Potato Invisible Cake is made with layers of paper-thin sweet potatoes baked in a lightly spiced cinnamon and vanilla batter. As it bakes, the thin slices soften and almost melt into the cake, creating beautiful layers and a tender, custard-like texture. It’s lightly sweet, warmly spiced, and especially good served with whipped cream or a dusting of powdered sugar.
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THIS CAKE IS WAY COOLER THAN IT HAS ANY RIGHT TO BE.
The first time I made this Sweet Potato Invisible Cake, I was mostly intrigued by the whole “invisible cake” thing. And once you slice into it, you totally get the name. There’s just enough batter to hold together all of those super thin layers of sweet potato, so they almost disappear into each other as they bake.
And can we talk about that slice? All those layers! This is one of those desserts that looks like you did something very impressive when really the mandolin did most of the work.
The sweet potatoes get incredibly soft and tender, while the cinnamon, nutmeg, and vanilla give it that warm fall flavor without turning it into another version of sweet potato pie
Here’s what I love most about it:
- the edges get a little golden while the center stays soft and almost custardy
- it’s sweet, but not crazy sweet
- you get those gorgeous layers without having to actually decorate anything
- a big spoonful of whipped cream on top is absolutely the move
The only thing I’m going to boss you around about is slicing the sweet potatoes THIN. Like, paper thin. This is where the mandolin earns its keep because thick slices just won’t give you that same soft, layered texture.
And once it’s baked, let it cool. I know. Rude. But it slices so much better once everything has had time to settle together.
This with coffee on a chilly fall morning? YES PLEASE.
Why You’ll Love Sweet Potato Invisible Cake
- Beautiful layered texture: Thin slices of sweet potato create gorgeous layers throughout every slice.
- Warm fall flavors: Cinnamon, nutmeg, vanilla, and sweet potato make this an especially cozy dessert for fall and the holidays.
- Lightly sweet: Coconut sugar adds sweetness without overpowering the natural flavor of the sweet potatoes.
- Soft and custard-like: The batter settles between the thin layers of sweet potato as it bakes, giving the cake a tender, almost custardy texture
- .Easy to serve: Bake it in a loaf pan, let it cool, slice, and add whipped cream or powdered sugar.
Ingredients Needed To Make Sweet Potato Invisible Cake
Make sure you scroll down to the recipe card to see the full list of ingredients needed for this recipe.
- Eggs: Help bind the batter and give the cake its soft, custard-like texture.
- Vanilla extract: Adds warmth and enhances the sweetness of the cake.
- Ground cinnamon: Gives the sweet potatoes that classic warm spice flavor.
- Ground nutmeg: A small amount adds another layer of cozy spice.
- Coconut sugar: Adds a rich sweetness. Brown sugar can also be used.
- Kosher salt: Balances the sweetness and brings out the other flavors.
- Baking powder: Gives the batter a little lift as it bakes.
- Coconut oil: Adds moisture. Avocado oil or melted butter can also be used.
- Milk: Helps create the smooth batter that coats the sweet potato slices.
- Gluten-free flour: Gives the cake structure. All-purpose flour can also be substituted.
Optional Toppings:
- Whipped cream
- Powdered sugar
Oven Temperatures
Oven temperatures can vary significantly from one oven to another. To achieve consistent results, it’s crucial to know the exact temperature inside your oven. The safest and most accurate way to determine this is by using an oven thermometer. This simple tool can help you avoid underbaking or overbaking your treats.
How To Make Sweet Potato Invisible Cake
- Prep the Ingredients: Preheat the oven, line the loaf pan, peel and slice the sweet potatoes thinly.
- Mix Dry Ingredients: Combine all the dry ingredients in a bowl.
- Mix Wet Ingredients: Whisk together the wet ingredients in a separate bowl.
- Combine Everything: Add the wet ingredients to the dry ones and stir until smooth.
- Assemble the Cake: Coat the sweet potato slices in the batter, then layer them in the pan, pouring any remaining batter on top.
- Bake: Place the pan in the oven and bake until set and golden brown.
- Cool and Serve: Let the cake cool before removing it from the pan, and top with whipped cream or powdered sugar if you like.
Commonly Asked Questions
Can I make this cake ahead of time?
Yes, this cake is perfect for making ahead! After it has cooled completely, you can store it in an airtight container at room temperature for a few days. If you want to keep it for longer, store it in the fridge for up to a week.
Can I use a different type of flour?
Absolutely! While the recipe calls for gluten-free flour, you can swap it with all-purpose flour if you prefer. If you’re following a keto diet, almond flour is a great option to keep it low-carb and still delicious.
How should I store leftovers?
Store any leftover cake in an airtight container at room temperature for up to three days. If you have more leftover and need to store it for a longer period, refrigeration works well. Just be sure to let it cool down completely before storing to keep it fresh.
Can I freeze this cake?
Yes, you can freeze this cake! Wrap it tightly in plastic wrap and then place it in a freezer-safe bag or container. It can be frozen for up to a month. To enjoy it again, simply let it thaw at room temperature or warm it up in the oven for a few minutes.
What can I use instead of coconut sugar?
If you don’t have coconut sugar, you can easily substitute it with brown sugar, maple syrup, or any other sugar alternative that you prefer. Just keep in mind that the flavor might change slightly depending on the substitute you use.
Can I add nuts or other toppings?
Of course! Adding chopped nuts like walnuts or pecans would give this cake a nice crunch. You can also try topping it with a dusting of powdered sugar or a dollop of whipped cream for a little extra flair.
Sweet Potato Invisible Cake
Equipment
- 9×5 loaf pan
- Mandolin slicer
- Whisk or spatula
- Peeler
Ingredients
- 3 sweet potatoes approx. 5 cups when sliced
- 3 eggs
- 1 ½ tsp vanilla extract
- 1 tsp ground cinnamon
- ⅛ tsp ground nutmeg
- ⅓ cup coconut sugar or substitute brown sugar
- ½ tsp kosher salt
- 1 ½ tsp baking powder
- 2 tbsp coconut oil melted (substitute avocado oil or butter)
- ½ cup milk
- ¾ cup gluten-free flour or substitute all-purpose or almond flour
Optional Toppings:
Instructions
Prep Ingredients:
- Preheat the oven to 350°F.
- Line a 9×5 loaf pan with parchment paper.
- Peel the sweet potatoes.
- Using a mandolin slicer (on the thinnest setting), slice the sweet potatoes paper-thin. (Use protective gloves for safety.)
Prepare Dry Ingredients:
- In a mixing bowl, combine flour, coconut sugar, baking powder, cinnamon, nutmeg, and kosher salt. Mix well.
Prepare Wet Ingredients:
- In a separate bowl, whisk together eggs, vanilla extract, coconut oil, and milk.
Combine Batter:
- Gradually add the wet mixture to the dry ingredients and mix until smooth.
Assemble Cake:
- Add the sliced sweet potatoes to the batter and toss until fully coated.
- Layer the sweet potato slices into the prepared loaf pan, pressing them down firmly.
- Pour any remaining batter on top, ensuring the sweet potatoes are evenly covered.
Bake:
- Place the loaf pan in the oven and bake for 45-55 minutes, or until the sweet potatoes are set and the top is golden brown.
Cool and Serve:
- Remove from the oven and let the cake cool completely before removing it from the pan.
- Optional: Top with whipped cream or dust with powdered sugar before serving.
Nutrition
This Sweet Potato Invisible Cake is such a fun and unique dessert that doesn’t feel like you’re compromising on flavor or texture. Whether you’re looking for a healthier treat or just want something a little different, this cake hits all the right notes. Plus, it’s incredibly easy to make, so it’s a win-win in my book! Enjoy it fresh, or top it with whipped cream for that extra touch of sweetness.
