Fudgy, beyond rich chocolate sheet cake topped with the creamiest peanut butter frosting. Feeds a crowd!
I saved a good one for today. I figured we can always use more peanut butter chocolate lava cakes in our lives—or really peanut butter and chocolate in any form. Especially if that chocolate is rich beyond belief, that peanut butter is in the form of frosting, and that cake is the size of Texas. And, of course, all those jazzy toppings.
Think of this as the single layer version of my towering chocolate peanut butter cake. Sheet cakes are quicker to bake and easier to decorate, which means you’ll be enjoying this cake even faster.
I’m so excited because I’ve never shared a chocolate sheet cake recipe on my blog before.
I’ve made this chocolate sheet cake a handful of times for various parties and I remember making it for an office party back when I worked in an office. And the entire thing disappeared in about .04 seconds. People flocked to it like it was a pot of shimmering gold under a rainbow.
The first step we’ll do is melt down some butter with water and cocoa powder on the stovetop. This helps dissolve and hydrate the cocoa powder, which typically tends to dry cakes out. This also helps bring out the cocoa’s flavor. When mixed with a cup of butter, we have some seriously delicious chocolate liquid. Instead of water, you can use black coffee (like my favorite chocolate cake!). It’s completely incredible and truly deepens that chocolate flavor.
Then we’ll mix in all with dry ingredients. The usual suspects like flour, baking soda, and salt. Whisk eggs, sugars, and vanilla extract in another bowl. Combine all of these mentioned ingredients together, then whisk in some buttermilk.
All of this chocolate magnificence goes into a half sheet pan, 12×17-inch baking pan—the same size we use for this chocolate cake roll.
Since it’s a thin cake, the bake time is quick, just like this funfetti sheet cake. Which means it won’t take long to cool, either. Which obviously means that you can cut into this chocolate cake and fall immensely in love sooner. But before all that, let’s frost it with the most unbelievable peanut butter frosting on the planet. It’s my go-to peanut butter frosting recipe, just made larger because this cake is enormous!
↑ ↑ Best peanut butter frosting to ever grace this earth.
One bite = super moist, fudgy, tender, and decadent with a party of texture on top in the form of: peanut butter cups, melted peanut butter, chocolate sprinkles, peanut butter chips, and more.
Fudgy, beyond rich chocolate sheet cake topped with the creamiest peanut butter frosting. Feeds a crowd! I encourage you to read the full recipe and the recipe notes before beginning so you're completely prepared.
