Loaded Peanut Butter Layer Cake
This Loaded Peanut Butter Layer Cake is the ultimate treat for peanut butter fans. With layers filled with creamy peanut butter and topped with decadent frosting, it’s perfect for birthdays, celebrations, or any day when you need a sweet pick-me-up. This cake promises a delightful blend of flavors and textures that will leave everyone wanting more.
Why You’ll Love This Recipe
- Rich Flavor: The combination of peanut butter in both the cake and frosting creates a deep, satisfying taste.
- Easy to Make: With straightforward steps, this recipe is accessible even for beginner bakers.
- Perfect for Any Occasion: Whether it’s a party or a cozy family dinner, this cake is sure to impress.
- Customizable Toppings: Feel free to add your favorite toppings like nuts or additional chocolate for an extra touch.
- Decadent Texture: The moist layers complemented by creamy frosting make each bite indulgent.
Tools and Preparation
To create this delicious Loaded Peanut Butter Layer Cake, you’ll need some essential kitchen tools. Having the right equipment can make the baking process smoother and more enjoyable.
Essential Tools and Equipment
- Stand mixer or hand mixer
- Mixing bowls
- Measuring cups and spoons
- Rubber spatula
- 9-inch round cake pans
- Cooling rack
Importance of Each Tool
- Stand mixer or hand mixer: Makes creaming butter and sugar quick and easy, ensuring a fluffy cake texture.
- Measuring cups and spoons: Accurate measurements are key to baking success; these tools help you get it right every time.

Ingredients
For the Cake
- 1/2 cup (112g) unsalted butter, room temperature
- 3/4 cups (155g) sugar
- 3/4 cup (108g) brown sugar, loosely packed
- 3/4 cup (210g) peanut butter
- 1/2 cup (115g) sour cream
- 2 tsp vanilla extract
- 3 large eggs
- 2 1/2 cups (325g) all-purpose flour
- 2 3/4 tsp baking powder
- 1/2 tsp salt
- 1/2 cup (120ml) milk
- 1/4 cup (60ml) water
For the Frosting
- 2 cups (448g) salted butter, room temperature
- 1 1/4 cups (350g) peanut butter
- 9 cups (1035g) powdered sugar
- 6–7 tbsp (90–105ml) water or milk
For Decorations
- 10 oz peanut butter chips
- 6 oz peanut butter chips
- 1/2 cup (120ml) heavy whipping cream
How to Make Loaded Peanut Butter Layer Cake
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C). Preparing your oven ensures an even bake for your cake layers.
Step 2: Prepare Your Cake Pans
Grease and flour two 9-inch round cake pans. This helps prevent the cakes from sticking when you remove them from the pans.
Step 3: Mix Wet Ingredients
In a mixing bowl, beat together the unsalted butter, sugar, brown sugar, and peanut butter until creamy. Add in the sour cream, vanilla extract, and eggs one at a time. Mix until fully combined.
Step 4: Combine Dry Ingredients
In another bowl, whisk together the all-purpose flour, baking powder, and salt. Gradually add this mixture to the wet ingredients while alternating with milk and water. Start and end with dry ingredients. Stir until just combined.
Step 5: Bake the Cakes
Divide the batter evenly between the prepared cake pans. Bake in preheated oven for about 23 minutes or until a toothpick inserted in the center comes out clean. Let cool in pans for 10 minutes before transferring to a cooling rack.
Step 6: Make the Frosting
In a large bowl, beat together salted butter and peanut butter until smooth. Gradually add powdered sugar while mixing on low speed. Adjust consistency with water or milk as needed.
Step 7: Assemble the Cake
Once cooled, place one layer on a serving plate. Spread frosting over the top of the first layer before adding the second layer. Cover the entire cake with remaining frosting.
Step 8: Decorate
Melt half of the peanut butter chips in a microwave-safe bowl until smooth. Drizzle over the frosted cake. Sprinkle remaining chips on top for decoration.
Enjoy your Loaded Peanut Butter Layer Cake! It’s rich, delicious, and sure to be a hit at any gathering!
How to Serve Loaded Peanut Butter Layer Cake
Serving your Loaded Peanut Butter Layer Cake can elevate the experience and make it even more delightful for your guests. Here are some fantastic serving suggestions that will complement the rich peanut butter flavor of the cake.
With Fresh Berries
- Strawberries: Fresh strawberries add a burst of freshness and a slight tartness that balances the sweetness of the cake.
- Raspberries: Their tangy flavor pairs beautifully with the creamy texture of the frosting, providing a lovely contrast.
A Scoop of Ice Cream
- Vanilla Ice Cream: A classic choice that adds creaminess and richness, enhancing the peanut butter flavor.
- Chocolate Ice Cream: For chocolate lovers, this option deepens the dessert experience with added layers of flavor.
Drizzled with Chocolate Sauce
- Warm Chocolate Sauce: A warm drizzle over each slice adds extra decadence and makes every bite even more indulgent.
- Peanut Butter Sauce: Enhance the peanut butter experience by drizzling a homemade or store-bought peanut butter sauce over the top.
Topped with Whipped Cream
- Homemade Whipped Cream: Light and fluffy whipped cream can be added to each slice for a creamy touch that complements the cake’s density.
- Flavored Whipped Cream: Consider adding flavors like vanilla or almond for an extra twist.
How to Perfect Loaded Peanut Butter Layer Cake
Perfecting your Loaded Peanut Butter Layer Cake is key to achieving that dreamy texture and taste. Follow these tips for an impressive result.
- Use Room Temperature Ingredients: Ensure all ingredients, including butter and eggs, are at room temperature for better mixing and fluffiness in the batter.
- Measure Flour Accurately: Use a kitchen scale or spoon flour into a measuring cup without packing it down to avoid dense cake.
- Avoid Overmixing: Mix just until combined to keep your cake light; overmixing can lead to toughness.
- Check Doneness Early: Start checking for doneness a few minutes before the recommended bake time; cakes continue cooking after being removed from the oven.
- Cool Completely Before Frosting: Let your layers cool completely on a wire rack before applying frosting to prevent melting.
- Experiment with Decorations: Get creative with toppings such as chopped peanuts, additional peanut butter chips, or chocolate shavings for visual appeal.
Best Side Dishes for Loaded Peanut Butter Layer Cake
Pairing side dishes with your Loaded Peanut Butter Layer Cake can enhance your dessert table. Here are some delightful options to consider.
- Fruit Salad: A refreshing mix of seasonal fruits provides a light contrast to the richness of the cake.
- Cheese Platter: A selection of cheeses can add a savory element that balances out sweetness; include mild cheeses like brie or gouda.
- Chocolate-Dipped Pretzels: The salty-sweet combination makes these crunchy snacks an excellent accompaniment alongside dessert.
- Coffee or Espresso: A hot cup of coffee or espresso enhances flavors and offers a comforting finish post-dessert.
- Mixed Nuts: A bowl of lightly salted mixed nuts provides crunch and savory notes, making them perfect finger foods alongside sweets.
- Caramel Popcorn: Sweet caramel popcorn can be a fun snack option that kids will love, adding playful textures next to your cake.
Common Mistakes to Avoid
Avoiding pitfalls can make your baking experience smoother. Here are some common mistakes when making a Loaded Peanut Butter Layer Cake and how to avoid them.
- Using cold ingredients – Baking with cold butter or eggs can lead to uneven mixing and texture. Always use room temperature ingredients for the best results.
- Not measuring accurately – Using incorrect measurements can affect the cake’s rise and texture. Use a kitchen scale or proper measuring cups for accuracy.
- Overmixing the batter – Overmixing can result in a dense cake. Mix until just combined for a light and fluffy texture.
- Ignoring oven temperature – Every oven is different; baking at the wrong temperature can lead to undercooked or burnt cakes. Use an oven thermometer to ensure correct temperatures.
- Skipping the cooling time – Trying to frost a warm cake can result in melted frosting. Allow your cake layers to cool completely before frosting.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container for up to 5 days.
- Keep layers separated with parchment paper to prevent sticking.
Freezing Loaded Peanut Butter Layer Cake
- Wrap individual slices tightly in plastic wrap, then place them in a freezer-safe container.
- Freeze for up to 3 months for optimal freshness.
Reheating Loaded Peanut Butter Layer Cake
- Oven – Preheat to 350°F (175°C). Place the slice on a baking sheet and heat for about 10 minutes.
- Microwave – Heat on medium power for 15-20 seconds, checking frequently to avoid overheating.
- Stovetop – Place a slice in a skillet over low heat, cover, and warm for about 5 minutes.
Frequently Asked Questions
Here are some common questions about the Loaded Peanut Butter Layer Cake that may help you.
Can I use natural peanut butter?
Yes, natural peanut butter works well but may alter the texture slightly due to its oil separation. Stir it well before using.
How do I make this cake gluten-free?
You can substitute all-purpose flour with a gluten-free flour blend. Ensure that other ingredients are also gluten-free.
Can I customize the frosting?
Absolutely! You can add cocoa powder for chocolate frosting or mix in crushed cookies for added texture.
What is the best way to serve this Loaded Peanut Butter Layer Cake?
This cake pairs wonderfully with a scoop of vanilla ice cream or fresh fruit for balance.
Final Thoughts
The Loaded Peanut Butter Layer Cake is not only indulgent but also versatile. You can easily customize it with different flavors or toppings, making it suitable for various occasions. Give this recipe a try, and delight yourself and your guests with its rich taste!
Loaded Peanut Butter Layer Cake
Indulge your taste buds with our Loaded Peanut Butter Layer Cake, a sweet masterpiece that combines the rich, nutty flavors of creamy peanut butter in both the cake and frosting. This decadent dessert features moist layers enveloped in velvety frosting, making it perfect for birthdays, celebrations, or just a delightful treat any day of the week. Easy to make and utterly satisfying, this cake is sure to impress family and friends alike. Enhance your experience by adding toppings like nuts or chocolate for an extra layer of indulgence.
- Prep Time: 20 minutes
- Cook Time: 23 minutes
- Total Time: 43 minutes
- Yield: Serves approximately 12 slices 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
- 1/2 cup (112g) unsalted butter, room temperature
- 3/4 cups (155g) sugar
- 3/4 cup (108g) brown sugar, loosely packed
- 3/4 cup (210g) peanut butter
- 1/2 cup (115g) sour cream
- 2 tsp vanilla extract
- 3 large eggs
- 2 1/2 cups (325g) all-purpose flour
- 2 3/4 tsp baking powder
- 1/2 tsp salt
- 1/2 cup (120ml) milk
- 1/4 cup (60ml) water
- 2 cups (448g) salted butter, room temperature
- 1 1/4 cups (350g) peanut butter
- 9 cups (1035g) powdered sugar
- 6–7 tbsp (90–105ml) water or milk
- 10 oz peanut butter chips
- 6 oz peanut butter chips
- 1/2 cup (120ml) heavy whipping cream
Instructions
- Preheat your oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
- In a mixing bowl, beat together the unsalted butter, sugar, brown sugar, and peanut butter until creamy. Add in the sour cream, vanilla extract, and eggs one at a time. Mix until fully combined.
- In another bowl, whisk together the all-purpose flour, baking powder, and salt. Gradually add this mixture to the wet ingredients while alternating with milk and water. Start and end with dry ingredients. Stir until just combined.
- Divide the batter evenly between the prepared cake pans. Bake in preheated oven for about 23 minutes or until a toothpick inserted in the center comes out clean. Let cool in pans for 10 minutes before transferring to a cooling rack.
- In a large bowl, beat together salted butter and peanut butter until smooth. Gradually add powdered sugar while mixing on low speed. Adjust consistency with water or milk as needed.
- Once cooled, place one layer on a serving plate. Spread frosting over the top of the first layer before adding the second layer. Cover the entire cake with remaining frosting.
- Melt half of the peanut butter chips in a microwave-safe bowl until smooth. Drizzle over the frosted cake. Sprinkle remaining chips on top for decoration.
Nutrition
- Serving Size: 1 slice (100g)
- Calories: 450
- Sugar: 35g
- Sodium: 280mg
- Fat: 25g
- Saturated Fat: 10g
- Unsaturated Fat: 12g
- Trans Fat: 0g
- Carbohydrates: 50g
- Fiber: 2g
- Protein: 8g
- Cholesterol: 45mg
