Chocolate Guitar Cake with Chocolate Kahlua Frosting

I'm going to go ahead and apologize--I didn't get very good pictures of this cake, but I still want to share it with you! I made it for my friend Kyle's birthday back in February. Yeah, it's been a little while.

Kyle is a huge Metallica fan. I'm not sure if you can tell, but I attempted to write his name in the Metallica font, buuttt I am awful at writing on cakes. Thankfully he could still tell what I was trying to do.

To make this cake, I used a guitar shaped pan that I got a long time ago from my grandmother's house. My friends were all, "Oh! Of course you have a pan like that!" 

The cake inside of this super metal guitar is Black Magic Cake, so no new recipes there. But I do want to share the frosting recipe with you because it was insanely good. I wanted to incorporate Kahlua into this cake somehow but I wanted to do something different than the Kahlua cakes I've made in the past. I wanted to do something new. I've made White Russian frosting before, and it was beyond delicious. So I thought chocolate would make it 349839 times better. (It totally did.) 

chocolate kahlua buttercream frosting
adapted from MyRecipes.com

1 cup butter (two sticks), room temperature
1/4 cup Kahlua
1 tsp vanilla extract
1/2 cup cocoa powder
2 - 2 1/2 cups powdered sugar 

1. In the bowl of a stand mixer, or a medium sized bowl and a hand mixer, cream butter on medium-high speed until smooth and creamy. 
2. Add Kahlua, vanilla, and cocoa powder. Mix on low speed until combined.
3. Add powdered sugar one cup at a time, mixing on low speed until mostly combined. Then mix on medium-high speed for a minute or two, or until frosting is fluffy. Scrape the sides of bowl after each addition.
4. If the frosting is too thin, add more powdered sugar 1/2 cup at a time. If frosting is too thick, add Kahlua or milk one tablespoon at at time until the desired consistency is reached. 

I was picturing a black guitar for this cake, so I added some black food coloring to the frosting.

Sometimes, there is the stereotypical idea of college and parties. Beer, red solo cups, and loud music. This was not the stereotypical kind of party. Because sometimes there are White Russians and record players. And also sometimes there are fake crowns, balloons, and a color-your-own-guitar station that some people set up while the others take the birthday boy to play laser tag so you can surprise him when they get back.


  1. Pretty cool - a guitar cake with flames (um, candles) on it!

    1. Haha, flames. It would have been even more awesome with some flames on it, though!

  2. First off - WOAH that is an impressive cake. I've never made any shaped-cakes before but Beth this looks fabulous! And kahlua buttercream? Any chance you want to ship that express up to nj? ;)

    1. Thanks, Jess! I've made a couple shaped cakes, but this one was easy because I had a pan for it. And if I had any left, I would totally ship it to you. :)

  3. hi! very Rock cake....cool..wish it has a bigger size...

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