I’m sharing a Just So Tasty pumpkin rum cake soaked in butter rum sauce and the little trick that makes it a true Best Pumpkin Cake.

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I love how this pumpkin rum cake looks fancy but is stupid easy to pull off. I used canned pumpkin puree and a little dark rum, and the whole thing gets soaked in a rum sauce that keeps every bite so tender it practically melts.

I kept thinking about those Best Pumpkin Cake lists and even peeked at Recipes With Rum for inspiration, but mostly I just followed my gut. It’s one of those desserts people ask about before they’re done eating, and yeah I messed up the first try, but the happy accidents made it better.

Ingredients

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Pumpkin puree: Moist, fibrous, gives vitamin A and natural sweetness, keeps cake tender not dry
All purpose flour: Provides structure and carbs, makes crumb dense if over mixed, usual pantry staple
Dark brown sugar: Adds deep molasses flavor, moisture and chew, more caramel notes than white
Unsalted butter: Rich, helps form glossy rum sauce, adds fat for tenderness and flavor
Eggs: Bind ingredients, give protein and lift, yolks add richness and color
Dark rum: Adds warm boozy notes and depth, most alcohol cooks off but flavor stays
Pumpkin pie spice: Cinnamon, nutmeg, cloves mix, gives autumn spice, small amount goes a long way

Ingredient Quantities

2 cups all purpose flour

1 1/2 teaspoons baking powder

1 teaspoon baking soda

1 1/2 teaspoons pumpkin pie spice

1 teaspoon ground cinnamon

1/2 teaspoon salt

1 1/2 cups granulated sugar

1/2 cup packed dark brown sugar

2 large eggs, room temp

1 cup canned pumpkin puree (not pie filling, it’s better)

1/2 cup vegetable oil

1/4 cup unsalted butter, melted

1/4 cup milk

1 teaspoon vanilla extract

2 tablespoons dark rum, divided (optional but recommended)

1/2 cup (1 stick) unsalted butter for the sauce

1/2 cup packed dark brown sugar for the sauce

1/4 cup water

1/4 cup dark rum for the sauce

1 teaspoon vanilla extract for the sauce

Pinch of salt

Powdered sugar or whipped cream for serving, optional

1/2 cup chopped pecans or walnuts, optional

How to Make this

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1. Preheat oven to 350F and grease a 9×13 inch pan well, or line it with parchment; this cake is sticky so dont skip the greasing.

2. Whisk together 2 cups all purpose flour, 1 1/2 teaspoons baking powder, 1 teaspoon baking soda, 1 1/2 teaspoons pumpkin pie spice, 1 teaspoon ground cinnamon and 1/2 teaspoon salt in a bowl.

3. In a large bowl beat 1 1/2 cups granulated sugar and 1/2 cup packed dark brown sugar with 2 large room temp eggs until smooth, then stir in 1 cup canned pumpkin puree (use pure pumpkin not pie filling), 1/2 cup vegetable oil, 1/4 cup melted unsalted butter, 1/4 cup milk, 1 teaspoon vanilla extract and 2 tablespoons dark rum (optional but recommended). Don’t overmix once you add the flour.

4. Fold the dry ingredients into the wet until just combined, a few small streaks are fine. If you want extra crunch stir in 1/2 cup chopped pecans or walnuts now.

5. Pour batter into prepared pan, smooth the top and tap the pan a few times to release air bubbles. Bake 35 to 45 minutes or until a toothpick in the center comes out with a few moist crumbs, not raw batter.

6. While the cake bakes make the butter rum sauce: in a small saucepan melt 1/2 cup (1 stick) unsalted butter with 1/2 cup packed dark brown sugar and 1/4 cup water, bring to a simmer and cook 2 to 3 minutes until glossy. Remove from heat and stir in 1/4 cup dark rum, 1 teaspoon vanilla extract for the sauce and a pinch of salt. Taste and add the rum slowly if you want less boozy flavor.

7. When the cake is done let it cool in the pan about 10 minutes, then poke holes all over the top with a skewer or fork so the sauce can soak in.

8. Slowly pour the warm butter rum sauce evenly over the cake, letting it absorb before adding more. If you added nuts earlier you can press a few extra on top for looks.

9. Let the cake cool completely so the sauce sets into the crumb, or serve warm with a dusting of powdered sugar or a dollop of whipped cream. Store leftovers covered in the fridge; flavors get better after a day.

Equipment Needed

1. 9×13 inch baking pan (lined with parchment or well greased)
2. Large and medium mixing bowls
3. Electric hand mixer or a sturdy whisk (mixer makes it easier)
4. Measuring cups and measuring spoons
5. Rubber spatula for folding and scraping the bowl
6. Small saucepan for the butter rum sauce
7. Wooden skewer or fork to poke holes in the cake
8. Oven mitts and a cooling rack for resting the pan

FAQ

Q: Can I leave out the rum or substitute it?

A: Yes. You can skip the rum, or swap it with equal parts vanilla plus a splash of apple cider or brewed coffee for depth. If you leave it out of the batter add a little extra milk so the cake stays moist. For the sauce replace the rum with water, apple cider, or more vanilla, and warm it before pouring.

Q: How do I tell when the cake is done?

A: Insert a toothpick in the center it should come out with a few moist crumbs but no wet batter. The cake should spring back gently when touched and the edges will pull slightly away from the pan. If you use a thermometer aim for about 200 degrees F in the center.

Q: My cake sank in the middle or turned out soggy. What went wrong?

A: Most likely overmixing, too much liquid, or opening the oven too early. Measure flour properly, mix only until just combined, and avoid prodding the oven. Also make sure your baking powder/soda are fresh. For a soggy result from the sauce, pour it slowly and while the cake is warm so it absorbs evenly not pools.

Q: Can I add nuts or use a different pan?

A: Totally. Fold in about 1/2 cup chopped pecans or walnuts or sprinkle them on top. A floured and greased bundt pan is ideal but a 9×13 pan works fine too, just watch the bake time since a shallower pan will bake faster.

Q: How do I store or make the cake ahead?

A: You can bake ahead. Keep the cake wrapped at room temp up to 2 days, or refrigerate up to 4 days once the sauce is added. The sauce keeps in the fridge for about a week. Cake freezes well up to 3 months wrapped tight, thaw overnight in the fridge then warm slightly before serving.

Q: My cake was dry, how can I fix it or prevent it next time?

A: Dry cake usually means overbaked or too much flour. Next time check a few minutes earlier, measure flour by spooning it into the cup and leveling it, and don’t overmix. To rescue a dry slice brush it with a little warmed sauce or simple syrup and serve with whipped cream or ice cream.

Pumpkin Rum Cake Recipe Substitutions and Variations

All purpose flour: try whole wheat pastry flour (use 1:1, a tad denser), cake flour (light, use 1 cup cake flour + 2 tbsp cornstarch per cup), or a 1:1 gluten free flour blend (usually works without other changes), or swap up to 25% almond flour for a nutty lift, but cut liquids slightly.
Vegetable oil: swap melted coconut oil 1:1 for a mild coconut note, melted butter 1:1 for richer flavor, unsweetened applesauce (replace up to half the oil) to cut fat and keep it moist, or plain Greek yogurt (up to half) for tenderness, just reduce milk a little.
Dark brown sugar: use light brown sugar 1:1 for less molasses, coconut sugar 1:1 for a caramel-y taste, maple syrup (about 3/4 cup per 1 cup sugar) but reduce other liquids ~3 tbsp, or turbinado/demerara 1:1 for a crunchy top.
Pumpkin puree: substitute sweet potato puree 1:1 (sweeter), butternut squash puree 1:1 (very similar), homemade pumpkin puree 1:1 (drain if watery), or carrot puree 1:1 for a brighter, sweeter cake.

Pro Tips

– Measure flour the right way: spoon it into your cup then level it off or even better, weigh it. Too much flour = dry cake, and thats the quickest way to ruin a tender crumb. Also make sure eggs and milk are room temp so the batter mixes up smoother.

– Dont overmix once the flour goes in. Fold until just a few streaks remain, or the cake gets tough and gummy. A few small lumps are fine, let the oven finish the work.

– Warm sauce so it soaks in easier and pour it slowly. Poke plenty of holes while the cake is still warm, then add the sauce in stages so it absorbs instead of pooling. Taste the sauce and add the rum a little at a time, you can always add more but you cant take it back.

– Toast chopped nuts for 4 to 6 minutes in a dry pan before adding them, it brings out way more flavor and keeps them crunchy. And if you can, let the cake sit a day in the fridge covered — the flavors meld and it actually gets better.

Pumpkin Rum Cake Recipe

Recipe by Tina Bueller

0.0 from 0 votes

I'm sharing a Just So Tasty pumpkin rum cake soaked in butter rum sauce and the little trick that makes it a true Best Pumpkin Cake.

Servings

servings

Calories

458

kcal

Equipment: 1. 9×13 inch baking pan (lined with parchment or well greased)
2. Large and medium mixing bowls
3. Electric hand mixer or a sturdy whisk (mixer makes it easier)
4. Measuring cups and measuring spoons
5. Rubber spatula for folding and scraping the bowl
6. Small saucepan for the butter rum sauce
7. Wooden skewer or fork to poke holes in the cake
8. Oven mitts and a cooling rack for resting the pan

Ingredients

2 cups all purpose flour
1 1/2 teaspoons baking powder
1 teaspoon baking soda
1 1/2 teaspoons pumpkin pie spice
1 teaspoon ground cinnamon
1/2 teaspoon salt
1 1/2 cups granulated sugar
1/2 cup packed dark brown sugar
2 large eggs, room temp
1 cup canned pumpkin puree (not pie filling, it's better)
1/2 cup vegetable oil
1/4 cup unsalted butter, melted
1/4 cup milk
1 teaspoon vanilla extract
2 tablespoons dark rum, divided (optional but recommended)
1/2 cup (1 stick) unsalted butter for the sauce
1/2 cup packed dark brown sugar for the sauce
1/4 cup water
1/4 cup dark rum for the sauce
1 teaspoon vanilla extract for the sauce
Pinch of salt
Powdered sugar or whipped cream for serving, optional
1/2 cup chopped pecans or walnuts, optional

Directions

Preheat oven to 350F and grease a 9×13 inch pan well, or line it with parchment; this cake is sticky so dont skip the greasing.
Whisk together 2 cups all purpose flour, 1 1/2 teaspoons baking powder, 1 teaspoon baking soda, 1 1/2 teaspoons pumpkin pie spice, 1 teaspoon ground cinnamon and 1/2 teaspoon salt in a bowl.
In a large bowl beat 1 1/2 cups granulated sugar and 1/2 cup packed dark brown sugar with 2 large room temp eggs until smooth, then stir in 1 cup canned pumpkin puree (use pure pumpkin not pie filling), 1/2 cup vegetable oil, 1/4 cup melted unsalted butter, 1/4 cup milk, 1 teaspoon vanilla extract and 2 tablespoons dark rum (optional but recommended). Don’t overmix once you add the flour.
Fold the dry ingredients into the wet until just combined, a few small streaks are fine. If you want extra crunch stir in 1/2 cup chopped pecans or walnuts now.
Pour batter into prepared pan, smooth the top and tap the pan a few times to release air bubbles. Bake 35 to 45 minutes or until a toothpick in the center comes out with a few moist crumbs, not raw batter.
While the cake bakes make the butter rum sauce: in a small saucepan melt 1/2 cup (1 stick) unsalted butter with 1/2 cup packed dark brown sugar and 1/4 cup water, bring to a simmer and cook 2 to 3 minutes until glossy. Remove from heat and stir in 1/4 cup dark rum, 1 teaspoon vanilla extract for the sauce and a pinch of salt. Taste and add the rum slowly if you want less boozy flavor.
When the cake is done let it cool in the pan about 10 minutes, then poke holes all over the top with a skewer or fork so the sauce can soak in.
Slowly pour the warm butter rum sauce evenly over the cake, letting it absorb before adding more. If you added nuts earlier you can press a few extra on top for looks.
Let the cake cool completely so the sauce sets into the crumb, or serve warm with a dusting of powdered sugar or a dollop of whipped cream. Store leftovers covered in the fridge; flavors get better after a day.

Notes

Below you’ll find my best estimate of this recipe’s nutrition facts. Treat the numbers as a guide rather than a rule—great food should nourish both body and spirit. Figures are approximate, and the website owner assumes no liability for any inaccuracies in this recipe.