Grandma’s Famous 6-Layer Cake is a total family favorite. The cake layers soak up that fudgy frosting and become incredibly moist — we’re talking the kind of homemade cake that gets requested at literally every single gathering. Be still my heart! 🎂

Okay so can we talk about how this cake has been making the rounds lately? I’ve seen fluffy grandma’s cake content absolutely everywhere — TikTok, Pinterest, you name it — and honestly? Grandma’s famous 6-layer cake recipe was ahead of its time. This is not your average layer cake situation, you guys. This is THE cake. The one people talk about for years. The one that makes everyone at the table go completely silent on the first bite. I literally can’t even.

This cake is really all about the frosting! You can pretty much use any yellow cake recipe you like. Here’s my favorite yellow cake recipe if you prefer to make it from scratch, but it would also be just fine if you used a yellow cake mix. Either way, those beautiful cake layers are going to soak up all that dreamy frosting and become something truly magical. And if you love grandma-style baking, you have to check out Grandma’s Pig Cake too — another absolute showstopper!

What’s in Grandma’s Famous 6-Layer Cake?

Let’s talk key ingredients, because this recipe is surprisingly simple for something so outrageously delicious. Here’s what you need to pull together this beautiful cake:

Three 10-inch round yellow cake layers, baked and cooled (see notes in recipe card)
2 cups evaporated milk or evaporated milk substitute
5 cups sugar
1/2 cup cocoa powder
12 ounces semi-sweet chocolate chips
2 cups marshmallow cream
1/2 cup + 6 tbsp butter

That’s genuinely it! No fancy equipment, no weird hard-to-find stuff. The secret ingredient that makes this frosting so insanely good is the marshmallow cream — it adds this silky, fudgy richness that regular layer cakes just don’t have. And those semi-sweet chocolate chips? They melt right in and take everything over the top. 🙌 Also a splash of vanilla extract in your cake layers doesn’t hurt one single bit, just saying!

How to Make Grandma’s Famous 6-Layer Cake

1. Split each of the baked and cooled cakes in half.

Grandma says she likes to do this the night before and store the layers of cake with sheets of wax paper in between each one in a cake container. She says it makes them exceptionally moist — and honestly, Grandma is never wrong about these things. Storing them in an airtight container overnight is her not-so-secret trick for that tender crumb we all go crazy over!

2. In a large sauce pot mix together the cocoa powder and the sugar. Whisk in the milk.

Stir constantly over medium high heat until mixture reaches 234ºF (softball stage). This can take up to 30-40 minutes. I know, I know — but trust the process! The payoff is so worth it. This is what separates this gorgeous homemade cake from anything you’d buy at a store. It’s also why this recipe is such a family favorite passed down through generations!

3. Remove from the stove and add the chocolate chips, marshmallows cream, and butter.

Stir together until melted and smooth. It’s going to look incredibly glossy and dreamy and you are going to want to eat it straight from the pot with a spoon. I will not judge you. Not even a little bit. 😂

4. Layer the frosting in between each layer of yellow cake. Frost the rest of the outside of the cake with the frosting.

Work quickly! As the frosting cools, it becomes more difficult to spread. Pile it generously between every single cake layer — don’t be shy! That’s the whole point of this glorious six-layer situation. If you have touch device users or little helpers in the kitchen swiping at everything, now is the time to shoo them away lovingly. 😄

5. Let rest for several hours.

Sure, you could dig in right away. But I promise it’s SO much better if you let it rest for a while (overnight is perfect!). It gives the frosting time to really soak into the cake and make those layers extra delicious. The frosting on the outside of the cake firms up to a fudge-like consistency and creates the perfect seal around the cake so that it stays exceptionally moist.

Tips, Tricks, and Variations

Okay real life confession: I have made this cake approximately one million times and I have picked up some really good tips along the way. First — if you’re making a smaller version for a birthday or party, this recipe works beautifully as a 6-inch cake! Just scale back your layers and you’ve got the most adorable little single layer birthday cakes situation, or even a cute smash cake for a first birthday. How precious is that?!

You can also bake mini cakes using smaller pans if you want individual servings — they’re SO cute for parties or afternoon coffee with your girlfriends. And while this recipe doesn’t use white frosting (because that chocolate fudge situation is non-negotiable, sorry!), if you want to make a fun birthday version you could absolutely do a white frosting layer on the outside for a dramatic two-tone look. Use down arrows to scroll through the comments section below — so many readers have shared their creative takes! Also, if you’re using a yellow cake mix to simplify things, go ahead and add a dollop of sour cream to the batter. It makes the crumb so much more tender and rich. That’s basically a secret tip from me to you. 🤫

How to Store This Cake

Once your cake is frosted and has rested, store it under a cake container lid or wrap it tightly. Kept in an airtight container at room temperature, this cake stays super moist for up to three days — honestly it gets even better on day two! If you need to keep it longer, pop it in the fridge. Just pull it out about an hour before serving so the frosting softens back up to that perfect fudgy texture. This cake is genuinely one of the best make-ahead desserts I know. It’s the kind of thing Grandma would make on a Friday and proudly present on Sunday! If you love her baking style, you also have to try Grandma’s Cinnamon Cake with Sour Coffee Apple — another cozy classic you’ll absolutely adore.

Why Everyone Is Obsessed With This Cake

Can we just take a moment? This isn’t like regular layer cakes where the frosting is sort of an afterthought. Here, the frosting IS the whole personality. It soaks in, it firms up, it creates this absolute dream of a texture. And because we’re talking six full layers, every single slice is this gorgeous cross-section of moist yellow cake and rich fudgy chocolate. It photographs beautifully — which is probably exactly why grandma’s famous 6-layer cake recipe keeps going viral on TikTok! If you’re looking for more showstopping desserts to add to your repertoire, I’m obsessed with this Grandma’s Famous Chocolate Trifle and these absolutely incredible French Silk Pie Bars — both are massive crowd-pleasers. And for anyone uploading & non-users who find this recipe through search or social — welcome! Drop your email address in the newsletter box so you never miss a recipe. By submitting you agree to our user agreement and available use terms, but I promise the only thing we’ll send you is delicious content. No spam, just cake. 🎉

I really truly cannot recommend this recipe enough. If you’ve never made it before, this is your sign. Block off a Saturday, put on your favorite playlist, and make this cake. Use swipe gestures to scroll through all those gorgeous photos for inspo, then get into that kitchen and bake something legendary. Your family is going to absolutely lose their minds. Have to make this — like, right now. You’ll thank Grandma later! 💕

Grandma's 6 Layer Cake

Yield: 16

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Layers of soft yellow cake soaking up rich, fudgy chocolate layers of my Grandma's famous chocolate frosting.

Ingredients

3 baked and cooled 10-inch round yellow cakes*

For the Frosting:

2 cups evaporated milk
5 cups sugar
1/2 cup cocoa powder
12 ounces semi-sweet chocolate chips
2 cups marshmallow cream
1/2 cup + 6 tbsp butter

Instructions

Split each of the baked and cooled cakes in half length-wise. Set aside.**

Make the frosting:

In a large sauce pot mix together the cocoa powder and the sugar. Whisk in the milk. Stir constantly over medium high heat until mixture reaches 234ºF (softball stage). This can take up to 30-40 minutes.

Remove from the stove and add the chocolate chips, marshmallows cream, and butter. Stir together until melted and smooth.

Layer the frosting in between each layer of yellow cake. Frost the rest of the outside of the cake with the frosting.

Notes

*We made the batter for these three cakes by combining TWO cake mixes and the ingredients listed on their boxes.

**Grandma says she likes to do this the night before and store the layers of cake with sheets of wax paper in between each one in a cake container. She says it makes them exceptionally moist.