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Home » Butter Cake with Citrus Rum Syrup and White Chocolate Mascarpone Frosting

Butter Cake with Citrus Rum Syrup and White Chocolate Mascarpone Frosting

Written by Living the Gourmet, a trusted food and lifestyle site since 2008.

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This buttery moist cake is soaked in an orange and rum syrup, then layered with a white chocolate and mascarpone cream. The result is a delightfully airy dessert with a symphony of flavors.

Butter Cake with Citrus Rum Syrup and White Chocolate Mascarpone Frosting

Yesterday was quite the day, and by 'quite the day' of course I mean that essentially nothing went according to plan, expectation, or intent.

To start things off, yesterday was the Birthday of Yours Truly, and of course your self-styled gourmet had some very 'gourmet plans' for herself. In short, I wanted to conduct a regular 'tour de force' for my special day. I had planned out a spread of delicious appetizers, a photogenic 'Living the Gourmet Dinner,' and a of course a cake worthy of my social media channels. Yes, I wanted to fully and thoroughly celebrate my own birthday, because if indeed 'You are your own best advocate,' then I am also my own best party and menu planner.

I even went so far as to save most of the shopping for yesterday morning, because I wanted to be sure that everything on hand was as fresh as possible, and because I also had two errands that needed to be run that morning anyway.

Butter Cake with Citrus Rum Syrup and White Chocolate Mascarpone Frosting

However, the river also had plans for itself. Yes, the river intended on 'celebrating' itself as well in all of its murkily aquatic spitefulness. Granted, I knew about these 'river plans' well in advance, but in true Northeast "I'll be Fine, The Weather Can't Hurt Me" fashion, I left that morning just as the tide was rising, intending to 'beat the flood' back to my home…and of course I was right, nothing was indeed 'hurt,' except my plans.

That said, I'm sure you can guess what happened…or maybe you can't. Cue up two very solid delays during my errands, and very poorly timed chat with a lovely acquaintance, and I ended up being blockaded off by a wall of water from my own home…and by 'my own home' I mean several full residential blocks from my home.

Butter Cake with Citrus Rum Syrup and White Chocolate Mascarpone Frosting

Yes, I ended up riding around aimlessly with a trunk full of perishable food waiting to be able to get back home, helplessly watching the day fade away. Indeed, by the time I was finally able to get home, the perishable food was of questionable quality, my patience were at the precipice of their end, and honestly, I just didn't feel like piecing together a 'tour de force' for myself anymore.

However, cake. There is always room for it, and there is always time for it, and when all else fails, we can eat cake.

Yes, if Bogart will always have Paris, then Lady Gourmet will have cake- Butter Cake soaked in a citrus and rum syrup then layered in a white chocolate mascarpone cream.

Naturally, that brings us to today's recipe...

Butter Cake with Citrus Rum Syrup and White Chocolate Mascarpone Frosting
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Butter Cake with Citrus Rum Syrup and White Chocolate Mascarpone Frosting

Butter Cake with Citrus Rum Syrup and White Chocolate Mascarpone Frosting


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  • Author: Living the Gourmet
  • Total Time: 45 minutes
  • Yield: 8-10 1x
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Ingredients

Units Scale

For the cake:

  • 1 box butter cake mix
  • 8 tablespoons unsalted butter, softened
  • 2 tablespoons mayonnaise
  • 3 eggs
  • 3/4 cup milk
  • 1 teaspoon vanilla
  • Berries for garnish, optional
  • Dark Chocolate for shaving, optional

Citrus Rum Syrup:

  • 1/3 cup simple syrup
  • Juice of 1 orange
  • 2 tablespoons Rum

White Chocolate Mascarpone Frosting:

  • 1/2 cup Mascarpone cheese
  • 1/2 teaspoons almond extract
  • 1/2 cup confectioner's sugar
  • 1 pint whipping cream
  • 1 (3.9 oz) package white chocolate pudding mix

Instructions

  1. Preheat oven to 350 degrees F. Butter two 8-inch round cake pans.
  2. In the bowl of your stand mixer with the paddle attachment, combine all ingredients for the cake until a thick, smooth batter forms. Divide the batter between the prepared pans. Tap the pans gently before baking to remove any air bubbles.
  3. Bake the cakes for about 30 minutes or until golden and the cake tester comes out clean. Remove and let cool on a cooling rack.
  4. In a small bowl, whisk together ingredients for the Citrus Rum Syrup. Take a thin knife and poke each cake several times, making an 'x' shape then drizzle the syrup over them. Let the cakes absorb the syrup while they cool completely.
  5. As the cakes are cooling, prepare your frosting by first whipping the cream and white chocolate pudding mix in the bowl of your stand mixer with the whisk attachment.
  6. In a separate bowl, whisk together the mascarpone cheese, almond extract, and confectioner's sugar until smooth. Fold into the whipped cream. Store the frosting in an airtight container until you are ready to frost the cakes.
  7. To assemble, turn out one of the cakes onto your cake plate, top side down. Scoop about 1½ cups of frosting onto the cake and smooth out with a spatula. Carefully place the second cake on top. Gently press down to make sure the cakes are level. Use the rest of the frosting to top the cake. If you have any left over you can fill the sides. If you so desire, shave some dark chocolate on top and garnish with a few fresh berries.
  8. Serve and enjoy!
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Dessert
  • Method: Bake
  • Cuisine: Italian American

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Butter Cake with Citrus Rum Syrup and White Chocolate Mascarpone Frosting

Enjoy with Love!

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  1. Chiara says

    March 10, 2018 at 9:51 pm

    that looks delicious Catherine ! Have a nice weekend my dear, xoxo

    Reply
  2. Claudia Lamascolo says

    March 08, 2018 at 4:37 pm

    Catherine you have out done yourself with this gourmet creation lovely cake!

    Reply
  3. Emily says

    March 07, 2018 at 10:57 pm

    The citrus rum syrup sounds amazing!! And I love mascarpone but have never used it in frosting before! can't wait to try out this cake recipe!

    Reply
  4. Jacqueline Meldrum says

    March 07, 2018 at 10:22 pm

    That looks glorious, I am drooling over that right now.

    Reply
  5. Allison Mattina says

    March 07, 2018 at 9:50 pm

    I couldn't agree more! There's definitely always time, room, and patience for cake. Especially if it's this one. 😉

    Reply
  6. Christina Shoemaker says

    March 07, 2018 at 9:49 pm

    Holy Moly! You had me at citrus rum syrup. This cake looks absolutely gorgeous and fluffy and I really wish you could deliver this to me right now. Can't wait to try it!

    Reply
  7. Jill says

    March 07, 2018 at 9:33 pm

    What a fantastic sounding cake! I could eat that frosting with a spoon. I rising river sounds kind of scary. Glad you made it home safely (eventually).

    Reply
  8. Big Daddy Dave says

    March 07, 2018 at 4:16 pm

    Catherine, Wow! This beautiful moist cake has so much going for it! My wife and I will each have a slice! Thanks! Take Care, Big Daddy Dave

    Reply
  9. Angie@Angie's Recipes says

    March 07, 2018 at 6:08 am

    You have me at that white chocolate mascarpone filling! Wish I could have a small slice now 🙂

    Reply

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Butter Cake with Citrus Rum Syrup and White Chocolate Mascarpone Frosting
Butter Cake with Citrus Rum Syrup and White Chocolate Mascarpone Frosting
Butter Cake with Citrus Rum Syrup and White Chocolate Mascarpone Frosting
Butter Cake with Citrus Rum Syrup and White Chocolate Mascarpone Frosting
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