The moment you take a bite into a slice of this Old-Fashioned Peanut Butter Cake, you’re transported back to sunlit kitchens filled with laughter and the sweet scent of baking. This delightful recipe brings the classic comfort of peanut butter to the forefront, creating a moist and airy cake that dance between sweet and salty. Perfect for both beginners and baking enthusiasts, it’s a straightforward yet satisfying dessert that whips up in no time. This Peanut Butter Cake is not only a crowd-pleaser, but it also offers you the joy of homemade goodness without the fuss. And who can resist a slice of cake that pairs perfectly with a scoop of vanilla ice cream? Are you ready to unlock the delicious memories tied to this timeless treat?

Why Will You Love This Peanut Butter Cake?
Nostalgic Comfort: This classic recipe evokes cherished memories of home-baked treats, bringing smiles to friends and family alike.
Rich, Authentic Flavor: The creamy peanut butter melds beautifully with sweet notes, creating a taste that’s both indulgent and comforting.
Simple Preparation: With easy-to-follow steps, even novice bakers can create this delightful cake without any fuss.
Versatile Delight: Serve it plain, or add a drizzle of chocolate sauce or a scoop of vanilla ice cream for an extra touch of indulgence. Try it with a side of hot coffee for the perfect pairing, reminiscent of those cozy afternoon breaks.
Time-Saver: This cake comes together quickly, giving you more time to enjoy with loved ones.
Prepare to impress your guests and satisfy your cravings with this delightful Peanut Butter Cake that’ll soon become a family favorite!
Peanut Butter Cake Ingredients
For the Cake
- All-Purpose Flour – Provides structure and stability for the cake; consider substituting with whole wheat flour for added nutrition, but expect a slight texture change.
- Baking Powder – Acts as a leavening agent, ensuring a fluffy rise; fresh baking powder is essential for the best results.
- Baking Soda – Works together with acidic ingredients like buttermilk to enhance the cake’s fluffiness.
- Salt – Elevates flavor by balancing sweetness; a pinch of sea salt can enhance the cake’s depth even more.
- Unsalted Butter – Brings richness and moisture; margarine can be used, but it may alter the flavor profile slightly.
- Creamy Peanut Butter – The star of the show, imparting rich flavor and texture; using natural peanut butter can result in a less sweet alternative.
- Granulated Sugar – Adds sweetness and moisture to the cake; increasing brown sugar can give a denser and moister outcome.
- Brown Sugar – Contributes caramel notes and additional moisture.
- Large Eggs – Help bind the mixture together and add moisture; room temperature eggs yield the best texture.
- Vanilla Extract – Enhances flavor depth; opt for pure vanilla extract for the most authentic taste.
- Buttermilk – Adds tenderness and a subtle tang; if unavailable, mix milk with lemon juice (1 cup milk + 1 tablespoon lemon juice) as a substitute for similar acidity.
Step‑by‑Step Instructions for Peanut Butter Cake
Step 1: Preheat Your Oven
Begin by preheating your oven to 350°F (175°C). While the oven warms up, grab a 9×13 inch baking pan and grease it generously with butter or nonstick spray. This ensures that your Peanut Butter Cake will release easily once it’s baked, so you’ll be left with a beautifully intact dessert to delight your family.
Step 2: Prepare the Dry Ingredients
In a mixing bowl, whisk together 2 cups of all-purpose flour, 2 teaspoons of baking powder, 1 teaspoon of baking soda, and a pinch of salt. This step is crucial for ensuring your Peanut Butter Cake rises perfectly, so make sure the baking powder and soda are fresh for optimum fluffiness. Set this dry mixture aside for later use.
Step 3: Cream the Butter and Sugars
In a separate large bowl, use an electric mixer to cream together 1 cup of softened unsalted butter, 1 cup of creamy peanut butter, 1 cup of granulated sugar, and 1 cup of brown sugar until the mixture turns light and fluffy, about 2-4 minutes. This process incorporates air, making your peanut butter cake tender and moist, so pay attention to the texture.
Step 4: Incorporate the Eggs and Vanilla
Add 3 large eggs to the creamed mixture, one at a time, mixing thoroughly after each addition. Then, pour in 2 teaspoons of vanilla extract and blend until just combined. This adds depth of flavor to your Peanut Butter Cake, making the aroma and taste as inviting as possible.
Step 5: Combine Dry Ingredients and Buttermilk
Gradually add the dry ingredient mixture to the wet batter, alternating with 1 cup of buttermilk. Start and finish with the flour mixture, mixing until just combined. This method ensures that your batter remains light and fluffy without overworking it, which is important for a delicious Peanut Butter Cake.
Step 6: Pour the Batter into the Pan
Once your batter is smooth and ready, pour it into the prepared baking pan. Use a spatula to spread it evenly and smooth the surface. This ensures that your Peanut Butter Cake will bake evenly, providing a delightful texture in each slice that you serve.
Step 7: Bake Until Golden
Place the baking pan in the preheated oven and bake for 30-35 minutes. You’ll know the cake is done when the edges are golden brown, and a toothpick inserted into the center comes out clean. Pay attention to the aroma filling your kitchen—it’s a sure sign that something delicious is baking!
Step 8: Let Cool Before Serving
After baking, remove the Peanut Butter Cake from the oven and allow it to cool in the pan for about 10 minutes. Then, carefully transfer the cake to a wire rack to cool completely. This step is vital for maintaining the cake’s plush texture, making it perfect for slicing and serving once cooled.

Make Ahead Options
These Old-Fashioned Peanut Butter Cakes are perfect for meal prep enthusiasts! You can prepare the batter up to 24 hours in advance by mixing all the wet and dry ingredients as per the recipe. Just store the combined batter in an airtight container in the refrigerator to maintain freshness. On the day of serving, simply pour the chilled batter into your greased baking pan and bake as directed. Additionally, leftover cake can be stored in an airtight container at room temperature for up to 3 days or refrigerated for a week, ensuring it stays just as delicious. This way, you can effortlessly serve up a slice of nostalgia on busy weeknights!
Peanut Butter Cake Variations & Substitutions
Explore the delightful possibilities of this beloved Peanut Butter Cake, and let your creative culinary spirit shine!
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Crunchy Peanut Butter: Swap creamy peanut butter for crunchy for a delightful texture contrast, adding a fun crunch in every bite. Enjoy those little surprises of nutty goodness throughout your cake!
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Chocolate Delight: Incorporate chocolate chips into the batter for a heavenly peanut butter and chocolate combination. It’s a classic pairing that creates an extra layer of indulgence.
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Natural Peanut Butter: For a more earthy vibe, use natural peanut butter, which offers a less sweet flavor and can elevate the cake’s overall taste profile. This twist is fantastic for those who favor simpler, richer flavors.
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Flavored Extracts: Experiment with almond or maple extracts to veer away from traditional vanilla, giving a unique depth to your cake. Each subtle note can transform your dessert into something extraordinary.
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Coconut Twist: Add shredded coconut to the batter for an unexpected tropical flavor. With this addition, each slice transports you to a sun-soaked paradise, perfect for spring or summer gatherings.
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Caramel Drizzle: Drizzle with salted caramel sauce before serving to enhance the cake’s sweetness with a touch of decadence. It adds a delightful layer of flavor that elevates the cake to a whole new level.
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Dairy-Free Option: Substitute unsalted butter with coconut oil or a vegan butter alternative for a dairy-free version. This variation allows everyone to enjoy the cake, regardless of dietary restrictions!
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Fruit Add-Ins: Stir in a handful of mashed bananas or applesauce for added moisture and flavor depth. The fruitiness pairs wonderfully with peanut butter and keeps the cake incredibly moist.
For more inspiration, consider pairing this cake with a refreshing glass of iced coffee, or serve it alongside a scoop of creamy vanilla ice cream. Whether you stick to the classic or venture into these variations, your Peanut Butter Cake is sure to be a cherished treat for all!
How to Store and Freeze Peanut Butter Cake
Airtight Container: Store the Peanut Butter Cake in an airtight container at room temperature for up to 3 days to keep it fresh and moist.
Refrigeration: If you plan to keep it longer, place the cake in the fridge where it can last up to a week, wrapped tightly to prevent drying.
Freezing: For extended storage, freeze individual slices wrapped in plastic wrap and foil. It can be frozen for up to 3 months.
Reheating: To enjoy, thaw overnight in the fridge, then warm slices in the microwave for 10-15 seconds for that cozy, freshly-baked feel.
What to Serve with Old-Fashioned Peanut Butter Cake
Indulge in a delightful culinary experience as you prepare the perfect meal to accompany this nostalgic dessert.
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Creamy Mashed Potatoes: The smooth and buttery texture offers a comforting contrast, making every bite a symphony of flavors on your palate.
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Honey-Glazed Carrots: Their natural sweetness and vibrant color provide a beautiful visual and taste balance, harmonizing with the rich peanut butter notes.
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Classic Cobb Salad: Fresh greens, crispy bacon, and creamy avocado create a refreshing contrast that cuts through the cake’s sweetness, making it a balanced meal.
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Vanilla Ice Cream: This timeless pairing enhances the peanut butter flavor while adding a cold, creamy element that’s simply irresistible.
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Decadent Chocolate Sauce: A drizzle of rich chocolate complements the nutty layers of the cake, transforming each slice into a luxurious treat.
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Fresh Berries: The tartness of berries like raspberries or strawberries offers a refreshing bite, cutting through the cake’s richness and adding a pop of color.
The combination of these dishes will not only satisfy your guests’ taste buds but also create a warm atmosphere filled with love and great memories. Enjoy!
Expert Tips for Peanut Butter Cake
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Use Room Temperature Ingredients: Ensure all ingredients are at room temperature for better mixing and a uniform texture in your Peanut Butter Cake. Cold eggs or butter can lead to a dense outcome.
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Avoid Overmixing: After adding the dry ingredients, mix just until combined. Overmixing can result in a tough cake, so be gentle to keep it light and fluffy.
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Fresh Baking Powder: Always check the freshness of your baking powder and soda; expired leavening agents can hinder the rising process, leading to a flat cake.
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Cooling Time: Let the cake cool in the pan before transferring it to a wire rack. This rests the structure and helps maintain its moist texture.
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Flavor Variations: Experiment with a pinch of sea salt or add a bit of cinnamon for a unique twist on this classic Peanut Butter Cake.

Old-Fashioned Peanut Butter Cake Recipe FAQs
How do I choose the best peanut butter for this recipe?
Absolutely! For this Peanut Butter Cake, I recommend using a creamy peanut butter that you enjoy eating straight from the jar. Look for brands with just peanuts and salt for a more natural taste. If you prefer a less sweet profile, natural peanut butter is a great option as well; however, be aware it may yield slightly different moisture levels.
How should I store leftover Peanut Butter Cake?
To keep your Peanut Butter Cake fresh, store it in an airtight container at room temperature for up to 3 days. If you need to store it longer, refrigerate it for up to a week. Just be sure to wrap it tightly to prevent it from drying out.
Can I freeze Peanut Butter Cake?
Certainly! For freezing, wrap individual slices in plastic wrap and then in aluminum foil to protect them from freezer burn. This cake can be frozen for up to 3 months. When you’re ready to enjoy a slice, simply thaw it overnight in the refrigerator, then warm it in the microwave for 10-15 seconds for that delightful fresh-baked taste.
What should I do if my cake doesn’t rise properly?
Very! If your Peanut Butter Cake doesn’t rise as expected, make sure your baking powder and baking soda are fresh, as expired leavening agents can lead to flat cakes. Additionally, ensure you’re following the mixing instructions carefully—overmixing the batter after adding dry ingredients can inhibit the cake’s rise. If you’ve done this, don’t fret; you can still turn it into a delicious trifle using layer cake pieces!
Is this Peanut Butter Cake suitable for those with nut allergies?
Unfortunately not. This Peanut Butter Cake contains peanut butter, which is a common allergen. If you’re looking for allergy-friendly alternatives, consider using sunflower seed butter or a similar nut-free product. Just be aware that this will alter the flavor profile of the cake, but it will still be delightful!
How long does the cake take to cool before serving?
Once you remove the Peanut Butter Cake from the oven, allow it to cool in the pan for 10 minutes, then transfer it to a wire rack. It should cool completely before slicing; this typically takes about 30 minutes to an hour. Cooling is important to maintain the cake’s texture and moisture!

Peanut Butter Cake That Will Make You Feel Nostalgic
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking pan.
- Whisk together flour, baking powder, baking soda, and salt in a mixing bowl.
- Cream the butter, peanut butter, granulated sugar, and brown sugar in a separate bowl until light and fluffy.
- Add eggs one at a time and mix thoroughly, then incorporate vanilla extract.
- Gradually add dry mixture alternately with buttermilk, mixing until just combined.
- Pour batter into the prepared baking pan, spreading it evenly.
- Bake for 30-35 minutes or until golden brown and a toothpick comes out clean.
- Cool in the pan for about 10 minutes before transferring to a wire rack to cool completely.

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