This easy Vegan Peanut Butter Cake recipe is a dream dessert for all peanut butter lovers! Old fashioned peanut butter cake is made dairy-free and egg-free and you won’t even miss it! You’ll love this light and fluffy homemade cake made with minimal ingredients.
Lately, I’ve been into making fun, easy vegan desserts. The latest on my list is this vegan peanut butter wacky cake. If you remember, I recently shared this Wacky Cake recipe and it’s been a huge hit!
The Best Peanut Butter Wacky Cake
Finding a recipe that is both easy and delicious is not always achievable. However, this vegan dessert recipe meets both criteria and a couple of others as well, such as affordable, and irresistible!
This recipe uses one round pan. What I love about this is that you can enjoy a slice or two with your friends or family, and not worry that you’ll eat too much of it. Not that anyone would worry about a thing like that. 🙂
You can find the full printable recipe, including ingredient quantities, below. But first, here are some explanations of ingredients and steps to help you make this recipe perfect every time.
- Lemon — We’ll use both the zest and the juice of the lemon.
- Oats — I used rolled oats for this recipe, but you can substitute instant oats.
- Chia — We’ll add some ground chia seeds to create a thicker texture. You can use whole chia seeds; I just prefer ground because it creates a smoother finished texture.
- Syrup — I used maple syrup, but you can substitute agave nectar.
- Milk — We’ll use almond milk for the best overnight oats! Substitute your favorite plant-based milk.
- Yogurt — I love adding some plant-based yogurt (plain, unsweetened) for an even more tangy flavor.
- Protein Powder — I add some vanilla protein powder for increased flavor and nutrients. If your protein powder is not sweetened, you may want to add an extra teaspoon or two of sweetener.
- Cornstarch — We’ll use cornstarch to thicken the lemon curd topping.
- Turmeric — A pinch of turmeric makes that lemon curd sunny yellow.
- Flour — I use all-purpose flour, but you can substitute whole wheat pastry flour (which is different than whole wheat flour).
- Sugar — Granulated sugar works. You can substitute coconut sugar for granulated sugar for a healthy peanut butter cake.
- Peanut butter powder — I used PB2 powder to make this recipe.
- Frosting — Sprinkle some powdered sugar on top or see below for some frosting ideas.
How to a Make Peanut Butter Cake From Scratch
- Stir together the dry ingredients, from the flour to the salt.
- Combine and stir the wet ingredients, from the oil to the vanilla.
- Pour the wet mixture into the flour mixture and stir until combined.
- Pour the batter into a prepared pan.
- Bake for 30 to 35 minutes until a tester inserted in the center comes out clean.
- Allow the cake to cool for about 10 minutes before inverting it onto a serving plate.
- Sprinkle the top with powdered sugar or top with Peanut Butter Frosting.
This easy peanut butter cake recipe is based on the famous “wacky cake” that originated in the Depression-era when ingredients were in short supply. Creative cooks took what ingredients were available and made do. Interestingly enough, dairy products were one of those scarce ingredients.
That’s why I refer to this as an old-school peanut butter cake. Of course, this recipe uses peanut butter powder, but it’s still pretty old school!
Peanut Butter Frosting
Here’s how to make a simple peanut butter frosting:
- Add peanut butter to a microwave-safe bowl.
- Heat for about 20 seconds, until spreadable.
- Stir in powdered sugar and peanut butter powder.
- Add vanilla-flavored plant-based milk and stir to combine. Continue milk until you get a spreadable consistency.
Here’s more on making vegan peanut butter frosting.
More Frosting Options
- Be sure to preheat your oven before baking because once you mix the batter, you’ll want to bake it right away.
- Double this recipe to make layered peanut butter cakes. Add some Vegan Chocolate Frosting in the middle of the layers. It’s like a nutter butter cake…perfection!
- Be sure to coat your pan with vegetable cooking spray. Alternatively, you can place a sheet of parchment paper in the bottom of the pan (Use scissors to cut it to fit the bottom of your pan) and then spray the top with vegetable cooking spray.
- Drizzle the top with vegan ganache for a different look and flavor.
Soooo good! My grand-daughter is allergic to eggs and milk so this is a winner. Thanks for sharing it!
More Peanut Butter Recipes
If you love this vegan peanut butter cake, here are some more favorite peanut butter desserts to enjoy:
That’s it for this moist Peanut Butter Cake recipe. You can see why it’s a tasty go-to dessert recipe!
Peanut Butter Wacky Cake
- Heat your oven to 350°F/175°C. Spray a round or square 8-inch cake pan with vegetable spray. You can also place a piece of parchment paper at the bottom of the pan and spray the sides with vegetable oil.
- Combine in a large mixing bowl the flour, sugar, peanut butter powder, salt and baking soda. Stir to combine.
- In a smaller bowl, combine the vegetable oil, water, vinegar, and vanilla. Stir to combine.
- Pour the water mixture into the flour mixture. Stir until combined.
- Pour the batter into your prepared pan. Bake for 30 to 35 minutes until a toothpick inserted in the middle comes out clean.
- Allow the cake to cool for about 10 minutes before inverting onto a serving plate. Sprinkle the top with powdered sugar or top with Peanut Butter Frosting*
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The nutrition information shown is an estimate provided by an online nutrition calculator and should not be considered a substitute for a professional nutritionist’s advice.
Here are some of the best peanut butter cake recipes to try:
- Vegan Peanut Butter Chocolate Cupcakes by Healthy Happy Life
- Peanut Butter Banana Blondies with Peanut Butter Frosting by yours truly! 🙂
Whatever simple peanut butter cake you’re nibbling on, enjoy!
This post was originally published in 2016 and was updated to include new photos and new text in 2021.