Oreo Confetti Cake

Cake inspiration can strike from the oddest places sometimes...

….the other week I’d just finished an Oreo cake, and decided I’d make a cup of hot chocolate to wind down before bed.

As per usual, I topped it with whipped cream and threw on some rainbow sprinkles...and then remembered I still had some crushed Oreos in a bowl on the counter. I added a few of those on too...and thought the way that that whipped cream swirl looked belonged on a cake!

Recipes, instructions, and links to supplies available online are below! Feel free to email me with any questions, and enjoy!

(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 Amazon.com 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!) 

Oreo Confetti Vanilla Cake Layers
Note - this is a slightly-simplified layer cake recipe from ChelSweets.com - I highly recommend checking out her site if you haven't before; it's amazing!! 
3 1/4 cup all-purpose flour
3 cup  granulated sugar
2 1/2 teaspoon baking powder
1 teaspoon  salt
1 cup unsalted butter (or 2 sticks) room temperature
2 teaspoons clear vanilla extract
5 eggs 
1 1/2 cups buttermilk, room temperature (or buttermilk powder with water is an option if you can’t find liquid buttermilk at your grocery store!)
1/8 cup (28 grams) vegetable oil 
Stir in at the end – 12 crushed Oreos & about ½ cup of rainbow jimmies (NOT nonpareils; the color will dissolve and turn the cake brown!)

Preheat oven to 350°F. Line four 7 inch pans (for taller layers) or three 8-inch cake pans with parchment rounds, and /or grease with non-stick 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 mix becomes crumbly.

Pour in eggs and mix on low until just incorporated.  Mix in the buttermilk 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. Stir in crushed oreos and rainbow jimmies – the I stirred as little as possible after this point, to keep the Oreo crumbs from turning my cake layers brown!

Divide batter evenly between the prepared cake pans (I find a kitchen scale helpful for this part). This guarantees your layers will bake to be the same height.
Bake for 35-37 minutes if using 8-inch pans, or 37-38 minutes for 7-inch cake pans (or until a toothpick 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.

This is a great time to make your frosting!

Cream Cheese Buttercream Frosting:
8 oz (one package) cream cheese, softened
16 Tablespoons (two sticks) butter, softened
6-7 c powdered sugar
2-4 Tablespoons milk
1 T clear vanilla extract
1/4 t. salt (if using unsalted butter)
Stir in at the end – 6-8 crushed Oreos & about ½ cup of rainbow jimmies (NOT nonpareils; the color will dissolve and turn the frosting brown!)
Beat together softened cream cheese and butter; slowly add in powdered sugar alternating with milk until frosting reaches desired consistency. Add vanilla and salt if needed and beat until well combined.
You’ll see in the video my crumb-coat layers was much darker brown than the outer frosting layer – I over-stirred some frosting and turned the color too brown, so I had to make more for the outer layer. Stir as little as possible if you want your frosting to stay light in color!

Additional Supplies/Equipment:
- 1 8- or 10 -inch cardboard cake circle (I prefer Wilton’s center-punched circles)
- 1 cup chocolate chips + ¾ cup whipping cream (for ganache drip – recipe below)
- Squeeze bottle OR piping bag OR spoon – whatever you’d prefer to add your ganache drip to the cake
- Large piping bag & tip – I use this set of reusable large bags & tips more than almost any of my others!
- Additional 8-12 Oreo cookies, whole – for decorating
- 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)
- Additional - 6-8 crushed Oreos & about ¼ cup of rainbow jimmies sprinkles, for decorating

Once your cakes are cool, level them (if needed/desired). This can be done with a cake leveler or a large serrated knife and a ruler. Place a smear of frosting on your cake circle (to keep the cake from sliding while you decorate it) and center your first cake layer in the center of the circle. Spread the layer with frosting.
Repeat the process with your remaining cake layers.

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. I usually do this with my large offset spatula.
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. As I worked through this part I had to pull out a few larger Oreo chunks that were getting in the way of smoothing my frosting. Fill in the holes with a bit of extra frosting and keep smoothing.

Once your sides are smooth, set the cake in the fridge or freezer for 10-15 minutes to set the frosting and chill the cake so your ganache drip will set.

Chocolate ganache drip:
6 oz (1 cups) semisweet chocolate chips
6 oz (¾ cups) heavy whipping cream
Meanwhile, make your ganache. Place chocolate chips in a heat-proof bowl. Place whipping cream in a small saucepan and bring almost to a boil over medium/low heat. Pour over chocolate chips and let rest for 2 minutes, then stir until smooth and silky.

(If desired, this can also be done in the microwave – combine ingredients and microwave on half power in 30-second intervals, stirring in between until smooth).

When your ganache has cooled to a moderate temperature – it should feel slightly warm and still be fairly liquid – transfer it to a squeeze bottle or piping bag. A spoon will work if you don’t have either of those, I've  just found spoons to be a little bit more difficult to work with.
Slowly drizzle ganache around the upper edge of your cake, pausing every inch or so to let more ganache fall in a drip down the side of the cake. Return cake to the fridge or freezer to set the drips.
Add several large swirls to the top rim of the cake – I used my largest most-open star for this, so the Oreo chunks wouldn’t clog the piping tip.
Space Oreo cookies in between the frosting swirls, add some crushed Oreos and sprinkles to the tip and base rim of the cake – and you’re done! Enjoy!

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

10 thoughts on “Oreo Confetti Cake

    1. I do actually use that much! I make my frosting fairly stiff so it holds its shape. I’ve never measured icing sugar in grams, but the cups to grams converter I’ve used before says 130 grams per cup, so around 780 grams?
      Twosugarbugs.com has an amazing swiss meringue buttercream recipe that would work for this cake if you’d rather not use a buttercream-style icing because they do tend to be pretty sweet!

  1. I am truly not trying to be a “Debbie Downer,” but, while the cake is truly beautiful, the frosting is so sickeningly sweet, it ruins the cake. I made this for my daughter’s
    birthday a few days ago and everyone in my family agreed that it actually make them all feel sick. So, we are left with 3/4 of a cake that no one wants to eat – I assure you this is definitely a problem we’ve NEVER encountered. The actual cake is delicious on it’s own and I feel it would be better with a slightly sweet whipped cream frosting that would allow the true flavor of the scrumptious cake to come through. Again, I am not trying to be too critical, just sharing in hopes that it might save someone the time and trouble of making the full cake as presented here and having the same issue we did.

    1. Sorry that was your experience! Even tempered with cream cheese, buttercream frostings still run pretty sweet as a whole and that’s not everyone’s thing. 🙂 As a clarifier, make sure you’re lightly filling your measuring cup with powdered sugar and not packing it when you’re measuring.
      Whipped cream frosting sounds amazing, or I have several friends that love Swiss meringue buttercreams (like this recipe – https://livforcake.com/swiss-meringue-buttercream-recipe/) because they uses meringue as a base and call for much less sugar. Again, sorry you didn’t like the frosting and thanks for the feedback!

    1. I don’t see why not! It might make the confetti a bit harder to see, but it won’t hurt anything! I’d recommend dying your frosting before you stir in the Oreo crumbs though; over-mixing in Oreo pieces will turn your frosting brown.
      If you do, send me a picture so I can see how it turned out! 🙂

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