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Do you dream about eating sweets for breakfast? This Sweet Potato Crumb Cake is perfect for just that! The best part is that it’s made using healthy sweet potatoes paired with just a few other easy ingredients.

There’s nothing better than starting off the day with this sweet potato coffee cake. Get your coffee pot brewing and warm up a piece of this cake. It’s one of the best ways to start the day!

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crumb cake on a white towel next to a silver fork


Best Sweet Potato Crumb Cake 

Is this a sweet potato dessert or a sweet potato breakfast? The answer is whatever you want it to be! The only thing I know for certain is that this sweet potato crunch cake is delicious, and everyone always wants more. 

Anytime my kids want a “special” breakfast, this sweet potato cake recipe is immediately on my radar. 

Can I share a secret with you? Before making this simple sweet potato recipe, I always just thought that you baked or boiled sweet potatoes to eat them. Crazy, right? 

Never did it cross my mind to make a crumb cake like this! I’m so glad that the foodie in me took over and created this sweet surprise. There’s really nothing quite like the flavor! 

Why you’ll love this recipe

  • It’s a dessert or a sweet breakfast, or a late night snack! 
  • It’s full of healthiness from the added sweet potatoes
  • You can save some to enjoy it the next day as well

Who invented Sweet Potato Crumb Cake?

Crumb cake was actually created in Germany, and thank goodness it was! I can’t imagine my life without this delicious treat.

The great thing about making crumb cake is that you can change the ingredients. Sweet potatoes are one of my favorites, but you can also make fruit crumb cakes, too.

This recipe comes from a friends’ cookbook: Grandbaby Cakes by Jocelyn Delk Adams. Her cakes are LEGIT!

Ingredients in Sweet Potato Coffee Cake

The flavor of this dessert doesn’t showcase how easy this recipe really is! Just a few easy ingredients are all you’ll need. 

  • All-purpose flour – make sure that there aren’t any lumps in the flour. 
  • Granulated sugar – needed to sweeten the cake and the streusel topping. 
  • Brown sugar – boosts that sweetness factor! 
  • Ground cinnamon – you can never have too much cinnamon. 
  • Unsalted butter – the butter needs to be melted prior to use. 
  • Eggs whites and yolks separated – eggs need to be at room temperature. 
  • Vegetable oil – coconut oil would work as well. 
  • Sweet potatoes roasted, peeled, and mashed
  • Hot water – the temperature of the water is important! 
  • Vanilla extract – adding vanilla always enhances the flavor. 
  • Baking powder – helps with the texture. 
  • Baking soda – adds a fluffy texture. 
  • Ground cloves – pairs perfectly with the cloves and nutmeg. 
  • Salt – just a pinch. 
  • Ground nutmeg – nutmeg adds a great warmth of flavor. 

How to make this Sweet Potato Dessert

  • This is one of my favorite sweet potato dessert recipes, and I think you’re going to love it as well! 
  • Preheat: Preheat the oven to 350°F. Line a 9×13” pan with foil or parchment paper and spray with nonstick cooking spray.
  • Make the streusel: in a medium bowl, whisk flour, brown sugar, granulated sugar, and cinnamon. Slowly add melted butter and whisk until crumbs are formed. The mixture will look wet, but it’s supposed to look that way.
  • Beat the eggs: In the bowl of a stand mixer fitted with the whisk attachment, beat the egg whites on high speed until stiff peaks form. Transfer the egg whites to a small bowl and chill until ready to use.
  • Combine: Clean your stand mixer bowl and switch to the paddle attachment. Beat the granulated sugar and oil on medium-high speed until combined. Add the egg yolks 1 at a time, combining well after each addition and scraping down the sides of the bowl as needed.  Add the mashed sweet potatoes, hot water, and vanilla and beat for another 3-4 minutes.
  • Add the dry ingredients: Turn your mixer to its lowest speed and carefully add the flour, baking powder, cinnamon, cloves, salt, baking soda, and nutmeg. Mix until the batter is just combined, being careful not to over-mix. Remove the egg whites from the refrigerator and gently fold them in using a spatula or wooden spoon.
  • Pour: Pour half the batter into the prepared pan. Top with half the streusel. Repeat with remaining batter and streusel. Bake for 55-65 minutes until a toothpick comes out moist but mostly clean. Let cool in the pan. 

Storing and Freezing Instructions

Serve warm or at room temperature. Store tightly covered at room temperature for up to 3 days.

crumb cake laid on its side around other pieces of the crumb cake

Expert Tips

You want to be very careful that you don’t overmix the ingredients. Also, if you can, use an egg separator for the whites and the yolks for the best results. 

Make sure to follow the steps to make the crumble topping perfectly. It’s the star of the sweet potato show! 

More Crumb Dessert Recipes

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Leave a rating by clicking the stars below!

crumb cake on a white towel next to a silver fork

Sweet Potato Crumb Cake Recipe

4.65 from 54 votes
This Sweet Potato Crumb Cake is my favorite crumb cake EVER. It’s easy, moist, rich, and full of flavor! And it makes your house smell like fall!
Prep Time 1 hour
Cook Time 1 hour
Total Time 2 hours
Yield 12 servings
Serving Size 1 serving

Ingredients
 

For the Streusel:

  • ¾ cup (93g) all-purpose flour
  • ¾ cup (150g) granulated sugar
  • ½ cup (100g) packed brown sugar packed
  • 1 tablespoon ground cinnamon
  • 6 tablespoons (84g) unsalted butter melted

For the Cake:

  • 4 large eggs whites and yolks separated, room temperature
  • 2 cups (400g) granulated sugar
  • 1 cup (237ml) vegetable oil
  • 2 large sweet potatoes roasted, peeled, and mashed
  • cup (79ml) hot water
  • 1 teaspoon vanilla extract
  • 2 cups (248g) all-purpose flour
  • 2 ¼ teaspoons baking powder
  • ½ teaspoon baking soda
  • 1 teaspoon ground cinnamon
  • 1 teaspoon ground cloves
  • 1 teaspoon salt
  • ½ teaspoon ground nutmeg

Instructions

  • Preheat oven to 350°F. Line a 9×13” pan with foil or parchment paper and spray with nonstick cooking spray.
  • Make the streusel: in a medium bowl, whisk flour, brown sugar, granulated sugar, and cinnamon. Slowly add melted butter and whisk until crumbs are formed. The mixture will look wet, but it’s supposed to look that way.
  • In the bowl of a stand mixer fitted with the whisk attachment, beat the egg whites on high speed until stiff peaks form. Transfer the egg whites to a small bowl and chill until ready to use.
  • Clean your stand mixer bowl and switch to the paddle attachment. Beat the granulated sugar and oil on medium-high speed until combined. Add the egg yolks 1 at a time, combining well after each addition and scraping down the sides of the bowl as needed.  Add the mashed sweet potatoes, hot water, and vanilla and beat for another 3-4 minutes.
  • Turn your mixer to it’s lowest speed and carefully add the flour, baking powder, cinnamon, cloves, salt, baking soda, and nutmeg. Mix until the batter is just combined, being careful not to over mix. Remove the egg whites from the refrigerator and gently fold them in using a spatula or wooden spoon.
  • Pour half the batter into the prepared pan. Top with half the streusel. Repeat with remaining batter and streusel. Bake for 55-65 minutes until a toothpick comes out moist but mostly clean. Let cool in the pan. Serve warm or room temperature. Store tightly covered at room temperature for up to 3 days.

Recipe Video

Recipe Nutrition

Serving: 1serving | Calories: 569kcal | Carbohydrates: 84g | Protein: 7g | Fat: 24g | Saturated Fat: 4g | Polyunsaturated Fat: 12g | Monounsaturated Fat: 7g | Trans Fat: 0.1g | Cholesterol: 55mg | Sodium: 274mg | Potassium: 293mg | Fiber: 2g | Sugar: 57g | Vitamin A: 4246IU | Vitamin C: 4mg | Calcium: 75mg | Iron: 2mg
Nutritional information not guaranteed to be accurate
Course Breakfast, Dessert
Cuisine American
crumb cake on a white towel next to a silver fork with words on top

Last Updated on September 15, 2022



Dorothy Kern

Welcome to Crazy for Crust, where I share recipes that are sometimes crazy, often with a crust, and always served with a slice of life.

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98 Comments

  1. Can you make your sweet potato crumb cake into muffins? I’m not a great baker but I have a ton of sweet potatoes that I somehow ended up with after a grocery order bought online and would like to use them up rather then put them in a green bin!!

  2. This cake was exceptional! I really like that half the carbs are from healthy sweet potatoes instead of flour. I used half the amounts of sugar called for in the crumbs and in the batter. (That’s why I only gave it 4 stars. No need to over-dose on sugar.) The only spice I used was cinnamon. The cake was still very sweet and delish.

  3. I absolutely love this recipe. It is not overly sweet. You can taste the sweet potato. So good. Thank you for this recipe. I will make this again for sure.

  4. The best cake I’ve ever had! It was a HUGE hit with friends/family. I will be making this anytime I need a dessert. Seriously, try this recipe.

  5.  I made this for a potluck breakfast at the office. People were going crazy over it, especially the streusel. I’m not sure they even realized it had sweet potato in it. It was wonderfully late, likely because of the lights being whipped and then fold it in. I did add a half a cup of chopped toasted pecans to the streusel mix, which didn’t hurt a bit. I also served 3 1/2 teaspoons of Penzeys cake spice for the spice mix in the cake batter. I did not line the cake pan, just sprayed it with coconut oil baking spray and had no problems with lifting out by the piece for serving.

  6. Thank you for posting such an amazing recipe. Never heard of the sweet potato crumb cake. But I must say its very amazing. I love baking cakes and desserts but the sad part is I do not get time to bake due the busy work schedule. Once my friend recommended me an online site http://www.loveandquiches.com where they serve very delicious and amazing desserts. I have not tried it yet, but she says it’s amazing. But this posted recipe I surely going to give a try.

  7. Just wondering if you could incorporate sour cream in with the mashed sweet potatoes?  If so, what proportions do you think would be suitable?
    Thanks!

    1. I made this for a company party and it was a hit. There was none left!

      I did substitute allspice for cloves, but it was awesome. I’ll be serving it again at Thanksgiving Dinner.

  8. My favorite family dessert is my sister’s Pecan Pie made with a homemade Gluten Free Crust that is always tender.

  9. Favorite family recipe would have to be my Mom’s chocolate fudge. She’s 80 and in declining health so when she dies…it’ll all be a memory. We’ve tried about a million times and no one can make it like her !

    Well, as we say here in the south….bless your heart !!! WOW…sweet potatoes in my world are often one of a babies first veggies : )

    This cake is insanely YUMMY ! Made it for a family lunch over the weekend…it lasted about 45 minutes !

  10. My favorite family recipe are my Mom’s Apple Stack Cake and her Chicken & Dumplings. But, I LOVE sweet potatoes. Wondering if I can substitute canned sweet potatoes for fresh? If so,how much should I use?

    1. As long as the canned are not very wet, I think you could sub them. I’m not familiar with canned sweet potatoes so I’m not sure of the water content. But as long as you make sure to get all the excess liquid out, go ahead and try them. About 2 cups mashed is what you need.

      1. Canned sweet potatoes can be used drain them and let sit for a few minutes to dry some like fresh. G