Chocolate Cake Recipe: Simple and Decadent

Rachel Noel
Jun 22
5 min read

Updated: Jun 30

When I first created my Reese’s Peanut Butter Overload Cake, I knew the chocolate cake underneath it had to be just right. It couldn’t be dry, overly delicate, or fussy to work with. I wanted a cake that was rich, soft, and deeply chocolatey, but still sturdy enough for beginner decorators to stack, fill, frost, and load up with all the fun that comes with a Reese’s-inspired cake.

This recipe actually started because of a good friend of mine who absolutely loved Reese’s and, of course, happened to be a dad. At the time, I was brainstorming class ideas and started noticing a pattern: my son loves Reese’s, my dad loves Reese’s, uncles, cousins, friends… honestly, I’m not sure I’ve met many men who would turn down chocolate and peanut butter. So a Father’s Day cake class built around that flavor combo felt like an easy yes.

That’s where this chocolate cake came in. I spent time testing and tweaking until I landed on a version that felt like mine—rich and moist with a true chocolate flavor, but also reliable enough to use in a classroom full of beginners. It needed to be forgiving, easy to layer, and sturdy enough to hold peanut butter Swiss meringue buttercream, a chocolate ganache drip, and all the Reese’s toppings without collapsing into a sad little sugar puddle.

The result is this cake: a rich chocolate layer cake with a soft crumb, plenty of flavor, and the kind of texture that still feels a little gourmet without being complicated. It’s the exact cake I use as the base for my Reese’s Peanut Butter Overload Cake, but the truth is, this recipe goes way beyond peanut butter.

This is one of those chocolate cakes that plays well with just about anything. You can pair it with a coffee mocha buttercream, turn it into a caramel pecan turtle cake, fill it with strawberry and frost it with strawberry buttercream, or add a layer of chocolate ganache and raspberry for that rich chocolate-berry combo. I’ve even seen chocolate orange done beautifully. If the flavor combination can benefit from a deep, rich chocolate cake in the mix, this recipe is a solid place to start.

That versatility is one of the reasons I love it so much. It’s dependable enough for classes, delicious enough to stand on its own, and flexible enough to work with so many different fillings, frostings, and flavor directions. Whether you’re making the full Reese’s Peanut Butter Overload Cake or using this recipe as the base for your own flavor creation, it’s one worth keeping in your recipe file.

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Rich Chocolate Cake

If you're looking for an incredibly moist, deeply chocolatey cake with a rich flavor and a soft, tender crumb, this is the recipe I use time and time again. Blooming the cocoa powder in boiling water intensifies the chocolate flavor while creating a smooth batter that bakes into an incredibly moist cake.

This recipe is sturdy enough for stacking and decorating while remaining soft enough to melt in your mouth. It's one of my favorite chocolate cake recipes for birthdays, weddings, and celebration cakes.

Author: Rachel NoelIt's Just a Cookie Sugar Art Studio

Ingredients

All-purpose flour — 3¾ cups (17 oz | 482 g)
Granulated sugar — 4 cups (28 oz | 794 g)
Unsweetened cocoa powder — 1½ cups (4½ oz | 128 g)
Baking powder — 4 teaspoons (16 g | 0.56 oz)
Baking soda — 3 teaspoons (15 g | 0.53 oz)
Salt — 1 teaspoon (6 g | 0.2 oz)
Instant espresso powder — 2 teaspoons (4 g | 0.14 oz)
Buttermilk — 2 cups (16 oz | 454 g)
Vegetable oil — ⅞ cup (7 oz | 198 g)
Large eggs — 4
Vanilla extract — 4 teaspoons (20 mL | 20 g)
Boiling water — 1½ cups (12 oz | 340 g)

Instructions

Step 1 – Prepare the Oven

Preheat your oven to 325°F (163°C).

Prepare three 8-inch round cake pans by coating them with Cake Goop and lining the bottoms with parchment paper.

Step 2 – Prepare the Dry Ingredients

In the bowl of a stand mixer, whisk together:

All-purpose flour
Granulated sugar
Baking powder
Baking soda
Salt
Instant espresso powder

Set aside.

Step 3 – Bloom the Cocoa Powder

In a separate heatproof bowl, whisk together the unsweetened cocoa powder and the boiling water until completely smooth.

Allow the mixture to cool for a few minutes until it's warm but no longer extremely hot.

Rachel's Tip: Blooming cocoa powder unlocks more of its natural chocolate flavor and creates a richer, more intense chocolate cake.

Step 4 – Prepare the Wet Ingredients

In another bowl, whisk together:

Buttermilk
Vegetable oil
Eggs
Vanilla extract
Bloomed cocoa mixture

Whisk until smooth and fully combined.

Step 5 – Mix the Batter

Pour the wet ingredients into the dry ingredients.

Mix on low speed until everything is fully incorporated.

Once combined, increase the mixer to medium speed for approximately 30 seconds to ensure the batter is smooth.

Rachel's Tip: The batter will be much thinner than most cake batters—almost pourable. That's completely normal and one of the reasons this cake stays so incredibly moist.

Step 6 – Fill the Pans

Divide the batter evenly among the three prepared cake pans.

Rachel's Tip: I always recommend weighing each pan so every layer bakes evenly.

Step 7 – Bake

Bake for approximately 35 minutes, or until a toothpick or cake tester inserted into the center comes out with a few moist crumbs attached.

The cake should spring back lightly when gently touched.

Rachel's Tip: A completely clean toothpick usually means the cake has baked a little too long. You're looking for just a few moist crumbs—not wet batter.

Step 8 – Cool

Allow the cakes to cool in their pans for approximately 10–15 minutes before turning them out onto plastic wrap or a cooling rack.

If wrapping the cakes while still slightly warm, wrap them loosely in plastic wrap to help lock in moisture.

Baker's Tips

Always bloom your cocoa powder for the richest chocolate flavor.
Weigh your cake batter for perfectly even cake layers.
Don't overmix once the wet and dry ingredients are combined.
Room-temperature eggs and buttermilk create a smoother batter.
Espresso powder enhances the chocolate flavor without making the cake taste like coffee.

Storage

Wrap cooled cake layers tightly in plastic wrap and store at room temperature for 2 days, refrigerate for up to 5 days, or freeze for up to 3 months.

For the moistest cake, wrap the layers while they're still slightly warm before freezing or refrigerating.

Don't forget to download the printable PDF version of this recipe to keep in your recipe binder. Happy baking!