Buttered Rum and Candied Sweet Potato Crumb Cake: Your Essential Fall Baking Project
As the air turns crisp and golden leaves begin their dance, there’s a unique call to the kitchen. This weekend, answer it by baking up a tray of this absolutely soul-warming **Buttered Rum and Candied Sweet Potato Crumb Cake** for your family. It’s not just a cake; it’s an experience, gorgeously spiced with notes of cinnamon, clove, and a whisper of nutmeg, making it the perfect start to any crisp autumn day. Imagine waking to the scent of this delightful coffee cake, promising comfort and joy with every bite.

The weekend is almost here, and it’s shaping up to be everything “fall” should be: cool, inviting, and utterly beautiful. And what better way to embrace the season than with a freshly baked **sweet potato coffee cake**? This particular crumb cake, an instant family favorite, is a moist, sweet, and wonderfully fragrant masterpiece that has been a huge hit with everyone who’s tried it. We’ve been savoring slices for days, proving it’s an ideal **fall dessert recipe** for feeding a crowd or simply indulging yourself over a leisurely weekend. Its rich flavors deepen and meld beautifully over time, making it an excellent candidate for meal prepping your breakfast or brunch for a few days.

The Inspiration: Celebrating Grandbaby Cakes and Jocelyn Delk Adams
While I’d love to claim full credit for this incredible creation, all the glory for this **spiced crumb cake** truly goes to my dear friend, Jocelyn Delk Adams. Many of you might know her from her beloved blog, Grandbaby Cakes, a treasure trove of delightful recipes and heartwarming stories. Now, she has brought her magic to print with her highly anticipated cookbook, Grandbaby Cakes: Modern Recipes, Vintage Charm, Soulful Memories. This book is an absolute must-have for any home baker or anyone who appreciates the power of food to connect generations and tell stories.

Seriously, you have to get your hands on this cookbook! I adore cookbooks as much as the next person, but Jocelyn’s work is on an entirely different level. It was eagerly awaited by myself and countless others, and for good reason. From its vibrant photography to its inviting narratives, it draws you in immediately. Many of my friends devoured it cover to cover in one sitting, captivated by its charm and delicious offerings. Personally, I prefer to savor it, allowing myself to soak in each recipe and story, one page at a time. I’ve been carrying my advance copy around in my tote bag ever since I received it several weeks ago. Whether I’m catching a few spare moments at my kids’ little league games, on a long car ride to meet family for dinner, or even while waiting in line at the bank, I pull it out and read as much as I can. It never fails to be a bright spot in my day, offering both culinary inspiration and heartwarming narratives that transport me to a cozy, joyful kitchen.
What makes Jocelyn’s book so extraordinary is that it transcends the typical cookbook format. It’s a deeply personal love letter to her family, a testament to the traditions, warmth, and culinary heritage that shaped her. We all owe a debt of gratitude to Jocelyn’s family, because she truly is one of the most vibrant, passionate, and warm individuals you could ever meet. Her infectious enthusiasm and genuine kindness light up every room she enters. The world is undeniably a happier place with her in it, and much of that comes from the rich heritage and loving upbringing she experienced, which is beautifully articulated within the pages of her book. Every recipe in Grandbaby Cakes is accompanied by a heartfelt story – why it’s special to her, who originally made it, and how she skillfully infuses it with her own modern spin while honoring its vintage charm. It’s incredibly heartwarming and a truly delightful read, a perfect blend of delicious **Jocelyn Delk Adams recipes** and soulful storytelling.
Baking a New Legacy: My Personal Journey and Family Traditions
Jocelyn initially encouraged me to include my own family pictures and stories in this post, sharing how different generations instilled a love of baking in me, much like her own experience. When I genuinely reflected on my past, I realized my baking history wasn’t quite as rich or storied as hers. My childhood didn’t feature a bustling kitchen filled with grandmothers passing down treasured family recipes. Sometimes, life takes unexpected turns, and families can drift apart despite our hardest efforts. It’s a reality many of us face, and it shaped my perspective profoundly. Recently, while talking to a dear friend about this very topic, we both agreed on a profound realization: the very reason we embraced baking with such passion was precisely because we missed having those traditions ourselves growing up. This absence fueled a powerful desire within us to actively create that warmth, connection, and joy for future generations.

So, I dedicate this entire post, and indeed much of my baking journey, to those two wonderful boys right there – my sons. They are the driving force behind why I bake, and the very reason I embarked on this crazy blogging adventure. I feel like I owe them so much! Just typing this brings tears to my eyes, thinking of the joy and memories we’ve created in the kitchen. If I could compose a beautiful baking love letter as eloquently as my friend Jocelyn did with her **Grandbaby Cakes cookbook**, these two would undoubtedly be its cherished recipients. For me, it’s about more than just food; it’s about creating lasting memories, fostering connection, and building a foundation of love and shared experiences, one delicious bite at a time. It’s about building those **family baking traditions** I wished I had, and watching them flourish in my own home.
Perhaps your upbringing wasn’t exactly like Jocelyn’s, learning to bake at your big mama’s knee and appreciating good food and family from a young age. But that doesn’t mean you can’t be the pioneer, the one to start a brand new, beautiful legacy filled with delicious aromas and cherished moments. And Grandbaby Cakes is truly the perfect starting point. It’s a book filled with not just incredible recipes, but the heart and soul to inspire you to create your own treasured baking traditions, whether for a cozy Sunday brunch or a festive holiday gathering. This **easy crumb cake recipe** is an excellent place to begin, promising both delicious results and the start of wonderful new memories that your family will cherish for years to come. It’s a versatile **weekend baking project** that yields immense satisfaction.


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Buttered Rum and Candied Sweet Potato Crumb Cake
16
servings
1 hour
1 hour
10 minutes
15 minutes
2 hours
10 minutes
Bake up a tray of this soul-warming Buttered Rum and Candied Sweet Potato Crumb Cake for your family this weekend! It’s gorgeously spiced with cinnamon and clove, and such a perfect start to a crisp fall weekend.
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Ingredients
For the Streusel Crumb Topping
- 3/4 cup (93.75 g) all-purpose flour
- 3/4 cup (150 g) granulated sugar
- 1/2 cup (110 g) light brown sugar, packed
- 1 tablespoon ground cinnamon
- 6 tablespoons (88.72 g) unsalted butter, melted
Cake
- 4 large eggs, separated
- 2 cups (400 g) granulated sugar
- 1 cup (218 ml) vegetable oil
- 2 large sweet potatoes, roasted, peeled, and mashed*
- 1/3 cup (83.33 ml) hot water
- 1 tablespoon vanilla extract
- 2 cups (250 g) all-purpose flour, sifted
- 2 1/4 teaspoons (2.25 teaspoons) baking powder
- 1/2 teaspoon (0.5 teaspoon) baking soda
- 1 teaspoon ground cinnamon
- 1 teaspoon ground cloves
- 1 teaspoon salt
- 1/2 teaspoon (0.5 teaspoon) ground nutmeg
Butter-Rum Sauce
- 1/2 cup (100 g) granulated sugar
- 4 tablespoons (59.15 g) unsalted butter
- 2 tablespoons rum
- 2 tablespoons water
Instructions
To Make the Streusel Crumb Topping:
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In a medium bowl, whisk together the flour, granulated sugar, brown sugar, and cinnamon until well combined. Ensure there are no lumps of brown sugar.
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Slowly whisk in the melted butter, ensuring it coats the dry ingredients. Continue mixing until delightful crumbs are formed. The mixture might seem a bit wet, but this is perfectly normal. Gently pinch pieces together with your fingers to encourage larger, more textured crumbs. Set aside.
To Make the Sweet Potato Cake:
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Preheat your oven to 350 degrees F (175 C). Liberally grease a 9×13-inch baking pan with baking spray or butter and flour, ensuring all corners and sides are covered to prevent sticking.
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In the clean bowl of your stand mixer fitted with the whisk attachment, beat the egg whites on high speed until stiff peaks form. The egg whites should hold their shape firmly. Carefully transfer the whipped egg whites to a small bowl and place them in the refrigerator while you prepare the rest of the batter.
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Using the same mixer bowl (no need to clean it if you’re quick!), switch to the paddle attachment. Beat the granulated sugar and oil on medium-high speed until they are thoroughly combined and the mixture appears lightened and slightly aerated. This usually takes a few minutes, about 2-3 minutes.
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Add the egg yolks, one at a time, ensuring each is fully incorporated into the mixture before adding the next. Remember to scrape down the sides and bottom of the bowl as needed to ensure an even mix and prevent ingredients from sticking.
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Stir in the mashed sweet potatoes, hot water, and vanilla extract. Continue to beat the mixture for another 3 to 4 minutes until everything is well blended, smooth, and fluffy. The sweet potato adds a beautiful moistness and subtle sweetness.
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Reduce your mixer speed to its lowest setting. Gradually and carefully add the sifted all-purpose flour, baking powder, baking soda, ground cinnamon, ground cloves, salt, and ground nutmeg. Mix the batter until just combined; be very careful not to overmix, as this can develop the gluten too much, resulting in a dense or tough cake. Stop mixing as soon as no streaks of flour remain.
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Retrieve the whipped egg whites from the refrigerator. Gently fold them into the cake batter using a spatula. This step adds essential lightness and airiness to your cake, contributing to its tender and fluffy texture, so be delicate and fold until just combined, without deflating the whites.
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Pour approximately half of the cake batter into your prepared 9×13-inch pan, spreading it evenly to cover the bottom. Generously sprinkle half of the streusel crumb topping over the batter. Repeat this layering with the remaining batter and streusel, ensuring the top layer is a luscious, textured crumb. This layering technique guarantees a delightful crumb-to-cake ratio in every single slice.
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Bake for 55 to 65 minutes. To check for doneness, insert a toothpick into the center of the cake; it should come out moist but mostly clean, with only a few moist crumbs attached. Avoid overbaking to maintain a tender crumb.
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Once baked, remove the cake from the oven and let it cool in the pan for 10 minutes on a wire rack. After 10 minutes, use a toothpick to poke holes all over the top of the cake in various locations, about an inch apart. This will allow the butter-rum sauce to seep deeply into the cake, infusing every bit with its incredible flavor.
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Lightly cover the cake with foil or plastic wrap to keep it from drying out while it continues to cool slightly. While the cake continues its initial cooling, it’s time to prepare the irresistible butter-rum sauce.
For the Butter-Rum Sauce:
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In a medium saucepan over medium heat, combine the granulated sugar, unsalted butter, rum, and water. Bring the mixture to a gentle boil, stirring occasionally to dissolve the sugar completely.
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Whisk continuously as the sauce simmers gently until it begins to thicken, which should take about 3 to 5 minutes. The sauce is ready when it can thickly coat the back of a spoon. Remove it from the heat and allow it to cool for 10 to 15 minutes. It should still be warm but not scalding hot, allowing it to penetrate the cake without evaporating too quickly.
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Generously pour the warm butter-rum sauce evenly over the top of the warm, poked cake, ensuring it soaks into all the crevices. Allow the cake to absorb the sauce completely before serving, which will take another 10-15 minutes. Serve at room temperature for the best flavor experience, perhaps with a dollop of whipped cream or a scoop of vanilla ice cream.
Notes
*To roast the sweet potatoes: Preheat your oven to 400 degrees F (200 C). Prick the sweet potatoes several times with a fork to allow steam to escape during baking. Rub each sweet potato with approximately 1 teaspoon of vegetable oil – this helps the skin crisp slightly and the potato cook evenly. Individually wrap each potato tightly in aluminum foil and place them all on a baking sheet. Bake for 35 to 55 minutes, or until they are completely tender when squeezed. The exact baking time will vary depending on the size and thickness of your sweet potatoes. They are done when the insides are soft and easily mashable with a fork.
Expert Baking Tips for Success:
- For the best crumb topping, ensure your butter is melted but not hot. Using slightly cooled melted butter helps create those perfect crumbly clusters that hold their shape.
- When folding in egg whites, be gentle! This step adds essential airiness to the cake, contributing to its light and fluffy texture. Use a large rubber spatula and fold in a circular motion, from the bottom up.
- Don’t overmix the cake batter once the dry ingredients are added. Overmixing can develop the gluten too much, resulting in a dense or tough cake. Mix just until no streaks of flour remain, a few small lumps are acceptable.
- If you don’t have rum or prefer a non-alcoholic version for the sauce, you can substitute with rum extract (use about 1 teaspoon, diluted in a little water or apple juice) or simply use additional water or apple cider. The flavor profile will be slightly different but still delicious.
- Store leftover crumb cake in an airtight container at room temperature for up to 3 days, or refrigerate for up to a week.
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