Cosmopolitan Cake

"I hope that in the years to come....

" make mistakes. Because if you are making mistakes, then you are making new things, trying new things, learning, living, pushing yourself, changing yourself, changing your world. You're doing things you've never done before, and more importantly, you're doing something.”
- Neil Gaiman

I…got a wild hair just before Easter of last year, and having just purchased 6-inch cake pans, decided I wanted to make a two-tiered cake.

No clue why. Guess I thought it would be cool.

I definitely should have looked for instructions on constructing a tiered cake, though! My top tier ended up being far heavier than I’d expected, and it SANK probably a good ½ to full centimeter into my base tier.

It was a tester cake, just one I made for fun, and my coworkers didn’t care how messy it looked by the day I brought it into work. The fact that it was covered in Cadbury chocolate eggs may have had something to do with that.

But – the thing that I took away from that experience? It’s OKAY to FAIL.

It’s okay not to know all the answers. To make mistakes. To do it wrong.

Because the experience you gain from those mistakes is the biggest cause of GROWTH as you brush of the dust (or flour, or powdered sugar, or whatever), pick yourself up, and give it another go. 

So – my better-informed second venture into the tiered cake world – this Cosmopolitan Cake!

Flavored with cranberry juice, lime, Triple Sec, and Vodka, this cake was a HUGE hit with my husband and coworkers, and I’m massively proud of the fact that I didn’t have my previous sinkage problem!! Recipe below!


(Disclosure: As a way to keep my kitchen stocked with butter, sugar, and flour I am a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for me to earn a commission by linking to and affiliated sites.
My posts often contain affiliate links. If you click a link and make a purchase, I may receive a commission at no extra cost to you!) 


Cosmo Cake Layers:

Note - this is a scaled (x1.5) and slightly-simplified layer cake recipe from - I highly recommend checking out her site if you haven't before; it's amazing!! 

4 7/8 c. all-purpose flour
4 1/2 c. granulated sugar
3 3/4 t. baking powder
1 ½ t. salt
1 ½  cup unsalted butter (or 3 sticks) room temperature
3 t. clear vanilla extract
1 ½ c egg whites (about 10 eggs, or use egg whites from a carton to avoid wasting the yolks)
1 cup buttermilk, room temperature
½ c vodka (I used Pinnacle vodka)
½ c Triple Sec
¼ c cranberry juice
1-2 small drops pink gel food coloring, if desired


Preheat oven to 350°F. Line three 8-inch cake pans and two six-inch cake pans  with parchment rounds, and/or baker’s floured cooking spray.

Mix together all dry ingredients (flour, baking powder, sugar, and salt) in a stand mixer with a paddle until fully combined. Mix chunks of room-temperature butter slowly into the dry mix, on a low speed. Continue to mix until no large chunks of butter remain, and the mixture becomes crumbly.

Pour in eggs and mix on low until just incorporated.  Mix in the buttermilk, vodka, triple sec, cranberry juice, and food coloring in two installments, on a low speed. Add in vanilla and oil, and mix at a low speed until fully incorporated. Scrape down the sides of the bowl with a spatula, then beat on medium speed for about 30 seconds.

Divide batter evenly between the prepared cake pans (I find a kitchen scale helpful for this part – I ended up with about 690g in my large pans and about 450 in my smaller ones). This guarantees your layers will bake to be the same height.

Bake for 35-37 minutes, (or until a skewer comes out clean). Allow cake layers to cool for 10-15 minutes on a wire cooling rack before removing from pans – it helps to run an offset spatula or knife around the perimeter of the pan first. Cool completely before frosting. Set in the fridge or freezer to accelerate the cooling process if desired. 

Once the layers have fully cooled, the caramelized bits can be trimmed from the sides / top of the cake using a serrated knife if desired. Be sure the layers are completely cooled or chilled before trimming. If you try to trim the layers while they’re still warm, they will crumble apart.

While you’re waiting…make your frosting!

Cosmo Frosting:
12 oz (one and a half packages) cream cheese, softened
16 Tablespoons (two sticks) butter, softened
10 cups powdered sugar
3 T vodka
3 T triple sec
3-4 drops green food color

Beat together softened cream cheese and butter; slowly add in powdered sugar alternating with vodka and triple sec until frosting reaches desired consistency. Add vanilla and salt and beat until well combined.

Additional Supplies/Equipment:
- 1 8- or 10 -inch cardboard cake circle (I prefer Wilton’s center-punched circles) + 1 six-inch cake board (one option is to buy a set like this one that contains a variety of cake circle sizes and trimmable dowels!) 
- 2-3 small limes  
- lemon/lime zester/channel knife tool
- Tablespoon or jigger (I used a 45/30mL jigger from my new Nau mixology set)
- additional ½ c each vodka and triple sec
- small paring knife and cutting board
- Small piping bag & tip – this set has been one of my favorites!
- additional small piping bag or squeeze bottle (for decorating with white chocolate ganache)
- martini glass – these cake layers bake dense enough to hold a real one, but feel free to use a plastic martini glass if you’d rather
Cake leveler, cake turntable, large offset spatula, and pastry cutter/bench scraper - not all 100% necessary but incredibly helpful! (Here’s a link to the cake turntable I use)
- I also used a Wilton icing comb on the sides of this cake – optional, but I really liked the decorative effect that it added!


Once your cakes are cool, level them (if needed/desired; these cakes usually bake fairly flat so I didn’t trim much from the tops). This can be done with a cake leveler or a large serrated knife and a ruler. Place a smear of frosting on your large cake circle (to keep the cake from sliding while you decorate it) and center your large first cake layer in the center of the circle. I wanted a bit more of a liqueur kick to the cake layers, so I used a jigger to infuse each one with about 30mL/2T of a mix of vodka and a triple sec. Optional but recommended! Spread the layer with frosting). Zest a bit of lime over the frosting, and add your next cake layer on top. Repeat the process with your remaining cake layers.

Next, repeat the same process with your smaller cardboard circle and cake layers. Of note – if your circles aren’t pre-center-punched, be sure to grab a dowel or straw and make your own hole in the exact center of the circle! This will allow you to center the tier on the base tier later on.

Now you're ready to crumb-coat . If you're unfamiliar with crumb-coating, it's just what it sounds like – spreading a thin layer of frosting over the entire outside of the cake to keep crumbs out of your final layer. 
Once your crumb coat has set (this takes about 5-10 minutes in the fridge), add your final layer of frosting and smooth. I like to use an offset spatula and bench scraper for this part. For my larger tier, I was able to smooth the frosting fairly well free-handed, but I struggled getting ght sides smooth on my smaller one. Setting a second small cake circle on top and using it as a guide for smoothing my icing worked much more easily for me!

Once your base tier is covered, place the icing comb on the cake circle against your cake and run the comb around the cake to texture the frosting (if desired). Place both tiers into the freezer for about 20 minutes to set the frosting and get the cake cold enough to set the white chocolate ganache decoration.

(This is a great time to make your ganache for the drip, but I’ll include instructions for stacking your tiers first. Ganache recipe is below!)

Okaaaay. The stacking process!

I watched a few tutorials before I started, but ‘How to Make a Tiered Cake’ by Chelsweets was my favorite.

Basically, doweling a tiered cake is done to ensure that the top tier doesn’t crush the lower tier, as well as keeping it centered. I used four shorter cut-to-height plastic straws for my base tier dowels, and one taller one cut at an angle in the center to hold my top tier in place.

Grab your ruler for this next part! Since I was centering a 6-inch cake on top of an 8-inch cake, I pushed the straws down into the base tier just over one inch from the cake edge, placing them evenly at quarter intervals around the cake. Place your last, tallest straw or dowel into the exact center of the cake, making sure to keep it straight up as you press down. Now you’re ready – center the hole in the bottom of your top tier cake circle over the tallest dowel and let the top tier gently down onto the base tier. The dowel will poke into the center of the top tier to hold it in place.

Pat yourself on the back; you did it! I found that my cardboard cake circle showed more than I was happy with, so I piped some extra frosting onto the base of the top tier to hide it.

White chocolate ganache: I used a pink-colored white chocolate ganache for this cake – I found my favorite white chocolate ganache recipe so far on .


Place heavy cream and white chocolate chips in a microwave-safe bowl, and microwave on 50% power in 30-second intervals until smooth, stirring in between. Add gel food color and stir until smooth.

I used a small zip-lock bags to pipe this drip, but a squeeze bottle would work well also!  
When your ganache has cooled to a moderate temperature – it should feel slightly warm and still be fairly liquid – transfer it to your piping bag or squeeze bottle. Slowly drizzle ganache around the edge of the cake, pausing about every ¾ to 1 inch to let ganache flow down the side of the cake to create a drip.  Pour a few tablespoons over the top of the cake and spread gently with an offset spatula, then turn your martini glass over and center it on top of the cake.

Repeat the drip around the edge of the base tier.

Pipe a few frosting swirls around the base of the top tier and add a few spiraled lime slices or wedges and a few lime zest curls if you’d like.

Step back and admire your amaaazing cake! Enjoy!

Make this recipe? Let me know  how it went - or find me on Instagram and tag @IntensiveCakeUnit in your photo!  

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