Your favorite cereal in cake form! Cinnamon cake layers, cream cheese frosting, and Cinnamon Toast Crunch crumble.
I always make a special cake for Ryan’s birthday. This has been happening for years, ever since I got into cake decorating in late 2009.
A few years, I took on a huge challenge and made him a Momofuku Birthday Cake. If you know Momofuku recipes at all, you know that they are intense and have a LOT of steps.
Needless to say, I ran into many issues making that cake, but the taste was well worth the effort. This year, I decided to turn one of Ryan’s favorite cereals into this Cinnamon Toast Crunch Cake (read: it was actually his idea).
In true Olivia fashion, I couldn’t decide how I wanted to decorate this cake. It’s always a last minute decision these days, and I don’t know if it’s just because I have no ideas, or because I want it to be perfect and (relatively) easy to do.
I wanted to try something a bit different, so I thought I’d crush up some more cereal and press it into the sides, kinda like my Funfetti Cake, but with cereal instead of sprinkles. Surely this would be easy given that I’d done it before — prop the cake on an upside-down bowl and press stuff into the sides.
It was all going swimmingly, except that I have this annoying desire to make things perfect, so I kept fussing with it and pressing more and more into the sides… until the cake started to fall OFF of the bowl and I had to literally grab it with my hands. Where is the crying emoji?? I need one. That or the cursing one.
So my pristine smooth-sided cake, perfectly covered in crushed up Cinnamon Toast Crunch now had the added bonus of handprints on the sides. Did I mention the frosting was soft? Yeah… so soft that you could literally see all of my fingers pressed into the cake. SIGH.
Thankfully I was able to patch the holes with more crushed-up cereal, but STILL. It’s a never-ending drama over here with my baking. Needless to say, the pics are taken from the most flattering angle, as usual.
The only other issue is that I had quite a bit of tunnelling in the cake because I overmixed the batter. So don’t do that.
It doesn’t affect the taste, but it certainly doesn’t look as pretty with these hollow channels running through it. And it can cause your cake to be more dense.
How to Make this Cinnamon Toast Crunch Cake
I added a bit of cinnamon to my Vanilla Cake recipe and paired it with a cream cheese frosting to cut down some of the sweetness from the cereal. I also used cereal milk (Cinnamon Toast Crunch cereal steeped in milk) for added flavor.
One of my favorite elements of the Momofuku cakes is the crumble. It adds an amazing flavor and texture to the cakes, so I’ve started incorporating it into a few of mine. I figured this Cinnamon Toast Crunch Cake needed a bit of, well, “crunch,” so I made a crumble using crushed up cereal and placed it between the layers.
Cake Tip!
An easy option would just be to use straight-up crushed up cereal between the layers if you like.
The cake tasted amazing! Ryan said it tasted just like having the cereal with milk. If you have a Cinnamon Toast Crunch fan in your life, they will love this cake!
Frequently Asked Questions
How can I convert this recipe?
- The recipe as-is will also work in three 6″ pans. For three 8″ pans, 1.5x the recipe. Baking time may need to be adjusted.
- To make cupcakes, all you need to do is reduce the baking time — start checking at 15mins or so. The recipe will make 18-24 cupcakes depending on size.
- For other conversions go here.
Can I make it in advance?
- The cooled cake layers can be baked ahead of time, double wrapped in plastic wrap, and frozen for up to 3 months. Take out 2-3 hours before assembly.
- The frosting can be placed in an airtight container and refrigerated for 1 week for frozen for 3 months. Bring to room temp and rewhip before using.
- The cooled cereal crumble can be stored in an airtight container for up to a week. You can also freeze it for up to 3 months.
- The finished cake (whole or sliced, stored airtight) can be frozen for up to 3 months.
Can I get the measurements by weight/grams?
- There is a Metric option in the recipe card. If you click it it will convert everything to grams.
- This conversion is done automatically and I cannot guarantee the accuracy but many readers have had success using the metric option for this recipe.
Tip for this Cinnamon Toast Crunch Cake
- The crumble uses grape seed oil because I had some on hand. You can use any vegetable oil and it will work just fine. Or just skip the crumble and use roughly chopped/crushed cereal between the layers.
- The frosting is soft, so be careful pressing the crushed-up Cinnamon Toast Crunch cereal into the sides. I recommend chilling the frosted cake slightly before doing so.
- Be careful not to over-mix the batter as this can cause tunnelling in the cake.
- I like to prepare my cake pans using Homemade Cake Release then line with parchment.
- Learn how to keep your cakes moist using Simple Syrup.
- To help ensure your cake layers bake up nice and flat, see my Flat Top Cakes post.
Cinnamon Toast Crunch Cake
Ingredients
Cereal Milk:
- 2 cups milk
- 2 cups Cinnamon Toast Crunch cereal
Cake:
- 2 1/4 cups all-purpose flour
- 2 1/4 tsp baking powder
- 3/4 tsp salt
- 1 tsp ground cinnamon ground
- 3/4 cup unsalted butter room temperature
- 1 1/2 cup granulated sugar
- 3 large eggs room temperature
- 1 1/2 tsp vanilla extract
- 1 cup cereal milk room temperature
Cinnamon Toast Crunch Crumble:
- 1 cup crushed Cinnamon Toast Crunch cereal
- 1/2 tsp baking powder
- 1/2 tsp salt
- 2 Tbsp grape seed oil or any vegetable oil
- 2 tsp vanilla extract
Cream Cheese Frosting:
- 1 cup unsalted butter room temperature
- 6 oz cream cheese room temperature
- 3 cups powdered sugar sifted
- 1 Tbsp clear vanilla extract
- pinch salt
Assembly:
- 1 1/2 cups crushed Cinnamon Toast Crunch cereal
Instructions
Cereal Milk:
- Place milk and cereal in a medium bowl. Stir well and steep for 20-25mins. Strain into a small bowl using a fine mesh sieve. Gently press the milk out of the cereal using a spatula or wooden spoon. Separate out 1 cup of the cereal milk for the cake. Save the remainder of the milk for the assembly. Discard the cereal.
Cinnamon Cake:
- Preheat oven to 350F. Grease and flour three 6" cake rounds, line with parchment. Wrap with EvenBake strips.
- In a medium bowl, whisk flour, baking powder, cinnamon, and salt and set aside.
- Beat butter until smooth. Add sugar and beat on med-high until pale and fluffy (2-3mins).
- Reduce speed and add eggs one at a time, fully incorporating after each addition. Add vanilla.
- Alternate adding flour mixture and cereal milk, beginning and ending with flour (3 additions of flour and 2 of milk) fully incorporating after each addition. Mix until just combined.
- Spread batter evenly into prepared pan and smooth the top with a spatula.
- Bake for 30-35mins or until a toothpick inserted into the center comes out mostly clean.
- Place cakes on wire rack to cool for 10mins then turn out onto wire rack to cool completely.
Cinnamon Toast Crunch Crumble:
- Preheat oven to 300F and line a sheet pan with parchment or a silicone mat.
- Whisk all dry ingredients. Add wet ingredients and mix until small clumps form.
- Spread evenly and bake for 15mins. Cool completely before using on cake.
Cream Cheese Frosting:
- Beat butter and cream cheese on med-high until pale and smooth (approx. 2mins).
- Reduce speed to low and add sugar 1 cup at a time. Add vanilla and pinch of salt. Increase speed to high and beat for 2-3 minutes until pale and smooth.
Assembly:
- Place one layer of the cake onto a cake stand or serving plate. Brush with 2-3 Tbsp cereal milk. Top with 2/3 cup of frosting and spread evenly. Sprinkle with crumble or crushed cereal. Repeat with remaining layers. Frost outside of cake and press crushed Cinnamon Toast Crunch cereal into the sides.
Monika Sharma says
Hello Olivia,
I am very happy to read this blog. You have shared a recipe of tempting cake. I will follow this recipe atleast once in my life and will spread your recipe to different-2 places.
Olivia says
Hi Monika! Thank you, I hope you try it 🙂
Jerad says
Hello Olivia,
I’m so excited to try this cake! My boyfriend asked for a “piñata” cake so I’m going to hollow out the middle and fill with cereal.
One question, I’m considering “steeping” some cereal in the buttermilk before adding it to the cake for an extra boost of flavor. Do you think using the cereal milk will affect the bake in anyway?
Best, Jerad
Olivia says
Hi Jerad! No I think that’s a great idea and it’s what I plan to do when I remake this recipe 🙂
Zunairah says
Hi Olivia! I haven’t tried this recipe out but I’ve heard its a really good one! I just have 1 question, does the frosting recipe leave leftover? And does the crumble leave leftover?
Olivia says
Hi Zunairah! You shouldn’t have too much of either left over 🙂
Bernadine says
Could I substitute about 1/4 to 1/2 on the buttermilk with rumchata?
Olivia says
Hi Bernadine! Yes, that should be fine.
Monique says
If I wanted to make mini cupcakes how much time would I bake it for?
Olivia says
Hi Monique! For minis, I would check them at 7-8 mins to see how they’re doing.
Kat says
This was great! Followed instructions exactly and the cake turned out beautifully. Thank you!
Olivia says
So happy you loved it, Kat!
Lily says
Your metric conversion for the crumbs is a little over. When I was making it, the crushed cereal was more like 70g loosely or 90g tightly packed per cup. Also, it’s kind of odd that the butter conversion in the frosting ingredients is in kg instead of g like in the cake portion.
The cake tasted amazing. The frosting was too sweet but that’s a me thing about all American buttercream and I swapped it for a cream cheese swiss meringue buttercream.
Thank you for the recipe! My brother loves cinnamon toast crunch and he enjoyed this a lot.
Olivia says
Hi Lily! Thanks for the feedback! The metric conversions are done automatically by a tool and it’s sometimes not foolproof. The butter in kg was super weird though! I’ve fixed that now. The cereal, that was my bad in the way I phrased the recipe. It should be 1 cup crushed cereal. Still though it was over so I reduced it. I’m so happy you both loved it and thanks so much for the feedback!
Kassi says
Hi! If I wanted to use this recipe for cupcakes, what would be a good temp and baking time?
Tia!
Olivia says
Hi Kassi! The temperature would stay the same, but start checking them at 15mins or so.
Sandy says
I love this cake recipe. It’s delicious!!! The 2nd time I made your cake, I stored it in the fridge to eat the next day. The crumble was not crunchy anymore. Do you recommend storing it at room temp for the next day.
Olivia says
Hi Sandy! The crumble will soften over time due to being in contact with the buttercream. It shouldn’t be completely mushy but it will lose some of its crunch.
Christina says
Can you make this in a 9×13 ceramic pan instead?
Olivia says
Hi Christina! Yes, for sure. You may just need to adjust the baking time.
JC says
This is probably one of the best cakes I’ve ever made! I doubled the crumble and sprinkled it on top and the sides of the cake, and sprinkled around the edges of the cake tray for presentation (and snacking, loved the salty kick). Honestly, it was insanely good and a huge hit with the cinnamon toast crunch aficionado whose bday I made it for – and I’m not even a sweet cereal fan! 🙂
Olivia says
Hi JC! That is amazing feedback, thank you! So happy you both liked it 🙂
Brittany says
Thank you so much for this recipe! I already left one comment about it but I’m gonna leave one here too! It was an amazing recipe! I made the cake for my boyfriends birthday and it came out perfectly! And I am not the best baker.
Olivia says
Hi Brittany! I’m so happy you both loved it. Thanks so much for the feedback!
Sam says
If I decorate the cake the day before and keep it in the fridge over night will the cereal on the outside become soggy?
Thanks!
Olivia says
Hi Sam! Sorry for the delayed reply. It will get soft/chewy. I would add the outside cereal before serving.
Sam says
Hi!
Is it okay to use regular vanilla extract? I’m in a pinch and I don’t have clear! But I do have 1 or 2 vanilla beans if that helps at all!
Thank you!!
Olivia says
Hi Sam! Regular will work just fine. The clear just helps to give it more of a candy/cereal taste.
Rachel says
I was just wondering if I could this with 8in instead of 6in? I need to make it for a little bigger group…
Olivia says
Hi Rachel! I would 2x the recipe for three 8″ pans. You can double the Servings to 24 to get the amounts.
Karianne says
Hi! What method do you recommend for adding the crushed cereal to the sides of the cake?
Olivia says
Hi Karianne! For the sides, I place the cake (it’s on a cake board) on an upside-down bowl that’s in a sheet pan (to catch the excess crumbs for easy cleanup). I then press the crumbs into the sides and let the excess fall into the pan. I hope this makes sense!
Rylan Zellner says
This looks so good all the recipes I copy some of them because I want to make them for my desserts shop
Olivia says
Hi Rylan! I hope you love it 🙂
Ivy says
The cake was delicious, only issue was the crumb was inedible, I’m so glad I tried it before sprinkling it on. The baking powder taste was overwhelming had to remake with about 1/4 tsp salt and baking powder.
Olivia says
Hi Ivy! That is strange! Are you sure you didn’t use baking soda by accident? That would definitely affect the flavour. The salt helps cut some of the sweetness from the crumble but also the frosting when paired with it. I’m glad you liked the cake though! 🙂
Emily Haddad says
Hello! I bought all the ingredients and realized I picked up sweet cream unsalted butter instead of regular unsalted butter. Will this be a problem?
Olivia says
Hi Emily! I’ve never used sweet cream butter before but a quick google search tells me it should be fine!
Jessica says
Can you help me understand prepping the round pans? You say to grease and flour. Are we putting the parchment paper over that or under that?
Olivia says
Hi Jessica! I spray my pans with Pam for Baking and then line them with parchment. You could grease the parchment again, but it’s not necessary.