Name: Vegan Peanut Butter Cake with Creamy Peanut Butter Frosting Recipe
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: American
Ingredients: 1 cup soy milk; 1 tablespoon apple cider vinegar; 2 cups all purpose flour; 1 tablespoon baking powder; 1/4 teaspoon salt; 3/4 cup creamy peanut butter; 1 cup granulated sugar; 3/4 cup vegetable oil; 1 cup creamy peanut butter; 3/4 cup vegan butter, slightly softened; 3 cups powdered sugar; 1 teaspoon pure vanilla extract; 4-6 tablespoons soy milk, more as needed; Tiny pinch of salt, optional

Jump to Recipe· 4.3 from 49 reviews

If you have a soft spot for all things peanut buttery and crave a dessert that’s both indulgent and entirely plant-based, you’ve just hit the jackpot with this Vegan Peanut Butter Cake with Creamy Peanut Butter Frosting Recipe. It’s the perfect marriage of moist, fluffy cake paired with a velvety, decadent frosting that melts in your mouth. Whether you’re vegan or just love discovering scrumptious new treats, this cake brings a nostalgic, comforting feel with every bite, yet manages to stay refreshingly light and totally satisfying. Trust me, once you try this recipe, it’ll quickly become a beloved staple in your baking repertoire.

Ingredients You’ll Need

The image shows four steps of mixing dough in white bowls on a white marble surface. Step 1 has a single white bowl filled with smooth light brown dough with swirls inside. Step 2 adds a heap of white powder on top of the dough in the same bowl. Step 3 shows a woman's hand holding a light blue spatula mixing the thick dough which now looks grainy and more solid. Step 4 shows the dough spread evenly in a long white rectangular tray, with texture marks made by the spatula. Photo taken with an iphone --ar 4:5 --v 7

What makes this cake truly special is how straightforward the ingredients are, yet each plays a vital role in crafting that rich peanut buttery flavor with the ideal cake texture. From pantry staples to a few thoughtful details, this list covers everything you need without fuss.

Soy milk: Creates the perfect vegan buttermilk when combined with apple cider vinegar, adding a slight tang that balances the peanut butter richness.
Apple cider vinegar: Helps the plant milk curdle and activates the baking powder for a fluffy cake.
All purpose flour: The cake’s foundation providing structure and tenderness.
Baking powder: Your cake’s rising agent, ensuring a light crumb.
Salt: Enhances all the other flavors especially the peanut butter’s nutty tones.
Creamy peanut butter: The star ingredient in both the cake and frosting, bringing richness, moisture, and that unmistakable flavor.
Granulated sugar: Sweetens the cake while helping to create a light texture.
Vegetable oil: Keeps the cake tender and moist, giving it that melt-in-your-mouth quality.
Vegan butter: Key for a fluffy, creamy frosting with just the right amount of softness.
Powdered sugar: Makes the frosting luxuriously smooth and sweet.
Vanilla extract: Adds warmth and depth to the frosting’s flavor.

How to Make Vegan Peanut Butter Cake with Creamy Peanut Butter Frosting Recipe

Step 1: Prepare the Vegan Buttermilk and Dry Ingredients

Start by preheating your oven to 350 degrees F and greasing your cake pan. Mix one cup of soy milk with apple cider vinegar and let it sit—this vegan buttermilk creates a tender crumb and adds a subtle tang that perfectly contrasts the sweetness of the cake. Meanwhile, whisk together the flour, baking powder, and salt in a separate bowl to ensure your cake rises properly and has a light texture.

Step 2: Mix the Wet Ingredients

In a large bowl or your stand mixer, blend the creamy peanut butter, sugar, and vegetable oil. This combination is the heart of our Vegan Peanut Butter Cake with Creamy Peanut Butter Frosting Recipe—it binds moisture, sweetness, and that lush peanut flavor into one gorgeous batter.

Step 3: Combine Wet and Dry Ingredients Alternately

With your mixer on low speed, alternate adding the flour mixture and the vegan buttermilk in three parts, starting and ending with dry ingredients. This method helps develop a thick batter that isn’t pourable but will bake into a delightfully dense, moist cake. Don’t worry; this texture is exactly what you want here.

Step 4: Bake the Cake

Transfer the batter to your prepared pan, gently spreading it evenly. Bake for 28 to 32 minutes, or until a toothpick inserted in the center comes out clean. When using a larger jelly roll pan, the baking time shrinks to about 15 to 18 minutes—so keep an eye on it! After baking, allow your cake to cool completely to make frosting easier and perfect for topping.

Step 5: Whip Up the Creamy Peanut Butter Frosting

Using a hand or stand mixer with a whisk attachment, beat the creamy peanut butter and vegan butter until smooth and silky. Add powdered sugar, vanilla extract, and four tablespoons of soy milk, then gradually increase the speed to whip the frosting until it’s fluffy and light. Adjust the consistency by adding more milk or powdered sugar if needed—this frosting should be thick enough to spread but still effortlessly creamy and pipe-able.

Step 6: Frost and Enjoy

Once the cake has fully cooled, spread or pipe the frosting generously over the top. For an extra touch of indulgence, sprinkle mini chocolate chips on top—they bring an irresistible texture and complement the peanut butter like best friends reunited.

How to Serve Vegan Peanut Butter Cake with Creamy Peanut Butter Frosting Recipe

The image shows a square piece of cake with smooth, light brown frosting on top, arranged with soft ridges. The cake layer beneath the frosting is tan and looks moist, with a slightly crumbly texture. The cake is placed on a simple white plate set on a white marbled surface. In the background, there is a second square piece of the same cake on another white plate, slightly out of focus. A metal fork lies to the right side of the closest plate, and a mustard-yellow cloth is softly blurred behind, adding a warm tone to the scene. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

A sprinkle of mini chocolate chips is classic and delightful, but you can also add crushed roasted peanuts or a drizzle of melted vegan chocolate for a fancier finish. Fresh berries can introduce a fresh, tart contrast that cuts through the cake’s richness beautifully.

Side Dishes

Serve this Vegan Peanut Butter Cake with creamy peanut butter frosting alongside a cup of vibrant chai tea or black coffee, which perfectly balances the sweetness and nuttiness. For a full dessert experience, pair with vegan vanilla ice cream or coconut whipped cream that melts alongside the warm cake.

Creative Ways to Present

Turn your cake into an elegant layered dessert by slicing it horizontally and adding frosting between layers. Alternatively, cut it into small squares, frost individually, and present as mini peanut butter cake bites at your next gathering—bite-sized happiness everyone will adore!

Make Ahead and Storage

Storing Leftovers

You can store leftover cake covered at room temperature for up to two days. It’s best kept away from direct sunlight and air to maintain its moisture. If your kitchen is warmer, refrigeration is fine, just make sure to cover it to prevent drying.

Freezing

Both the cake and frosting freeze well. Wrap the cooled cake tightly in plastic wrap and foil to avoid freezer burn. You can also freeze cake slices individually for quick treats later. The frosting can be frozen in an airtight container and thawed at room temperature before use. This makes prepping ahead for special occasions a breeze.

Reheating

For the freshest experience, bring frozen cake slices to room temperature before serving. You can also warm them slightly in the microwave for about 10 to 15 seconds to revive that soft, comforting texture. Avoid reheating frosted cake as the frosting can become messy when heated.

FAQs

Can I use almond or oat milk instead of soy milk?

Absolutely! While soy milk works best for curdling and texture in this Vegan Peanut Butter Cake with Creamy Peanut Butter Frosting Recipe, almond or oat milk makes a fine substitute. Just be sure to add the apple cider vinegar to achieve that vegan buttermilk effect.

Will natural peanut butter work in this cake?

Natural peanut butter tends to be runnier and less stable than store-bought creamy peanut butters, so it might affect the cake’s texture and rise. For best results, stick with a smooth and stable creamy peanut butter like JIF or equivalent brands.

Is this recipe gluten free or can it be made gluten free?

You can make this cake gluten free by swapping the all purpose flour for a gluten free blend, ideally one meant for baking. Keep the rest of the ingredients the same, and you’ll still have a delicious peanut butter cake that everyone can enjoy!

Can I make this cake into cupcakes?

Definitely! Just reduce the baking time to about 15 minutes, checking with a toothpick. Cupcakes are a fantastic way to serve individual portions and great for parties or lunches on the go.

How long does the frosted cake last?

Once frosted, keep the cake covered at room temperature and enjoy within two to three days. If you want it to last longer, refrigerate it for up to a week, but bring it back to room temperature before serving for the best flavor and texture.

Final Thoughts

There’s something incredibly joyful about baking this Vegan Peanut Butter Cake with Creamy Peanut Butter Frosting Recipe and sharing it with loved ones. It’s rich yet light, simple yet impressive, and utterly delicious. If you want a dessert that feels like a warm hug and satisfies your peanut butter cravings in the best possible way, this cake is your new best friend in the kitchen. Give it a whirl and watch it become a fast favorite!