5 Decadent & Foolproof 5-Ingredient Chocolate PB Cake You’ll Make on Repeat

5-Ingredient Chocolate PB Cake is one of those recipes that feels almost too easy for how outrageously good it turns out. Chocolate cake mix, creamy peanut butter, milk, eggs, and a generous handful of chocolate chips — that’s it. Five simple ingredients, one unforgettable dessert.

The first time I made this, I needed something quick for last-minute guests. I remember thinking, Okay, let’s keep it simple. But when that rich chocolate aroma filled the kitchen and we sliced into that moist, peanut buttery crumb? It tasted like I had spent hours baking.

Thank you for being here. Truly. Sharing easy, comforting desserts that taste bakery-worthy is what I love most. If you enjoy stress-free recipes like this, be sure to subscribe to my email list so you never miss a delicious new favorite.

Let’s bake something wonderful.

Overview of Recipe Content

This 5-Ingredient Chocolate PB Cake is:

• Rich and moist
• Deeply chocolatey
• Swirled with peanut butter goodness
• Beginner-friendly
• Perfect for any occasion

Perfect for:

• Birthdays
• Potlucks
• Weeknight dessert
• Holiday gatherings
• Chocolate cravings

Why You’ll Love This Cake

• Only 5 ingredients
• Minimal prep time
• Ultra moist texture
• Crowd-pleasing flavors
• Easy to customize

What It Tastes Like

Imagine a soft, tender chocolate cake with warm peanut butter swirled throughout. The chocolate chips melt into gooey pockets of sweetness, while the peanut butter adds richness and a slightly salty balance.

It’s indulgent, comforting, and dangerously easy to love.

Nutritional Snapshot

While this is definitely a treat, it’s:

• Higher in protein thanks to peanut butter and eggs
• Rich and satisfying (a little goes a long way)
• Perfect for sharing

If you love peanut butter and chocolate combinations, you’ll also enjoy my 3-Ingredient Banana PB Brownies and 3-Ingredient Flourless PB Mug Cake. Save them to your Pinterest board at https://www.pinterest.com/poulefrecipe/.

Ingredients

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• 1 box chocolate cake mix
• 1/2 cup creamy peanut butter
• 1 cup milk
• 3 large eggs
• 1/2 cup chocolate chips

That’s it. Five simple ingredients.

Tools You’ll Need

• Large mixing bowl
• Whisk or electric mixer
• 9-inch round or 8×8-inch baking pan
• Parchment paper (optional)

Substitutions & Additions

Want to make it your own?

• Use dark chocolate cake mix for deeper flavor
• Swap milk for almond milk
• Add chopped peanuts for crunch
• Drizzle melted peanut butter on top
• Frost with chocolate ganache

How to Make 5-Ingredient Chocolate PB Cake

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Step 1: Preheat & Prepare

Preheat oven to 350°F (175°C).

Grease or line your baking pan.

Step 2: Mix the Batter

In a large bowl, combine chocolate cake mix, milk, and eggs.

Whisk until smooth and well incorporated.

The batter should be silky and thick.

Step 3: Add Peanut Butter

Warm peanut butter slightly (10–15 seconds in microwave) to make it easier to swirl.

Pour batter into prepared pan.

Drop spoonfuls of peanut butter over the batter and gently swirl with a knife for that marbled look.

Step 4: Add Chocolate Chips

Sprinkle chocolate chips evenly on top.

Step 5: Bake

Bake for 30–35 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.

Let cool before slicing.

The aroma alone is worth it.

What to Serve with Chocolate PB Cake

• Vanilla ice cream
• Fresh strawberries
• Whipped cream
• Cold milk
• Espresso or coffee

It also makes a dreamy base for an ice cream cake.

Tips for Making It Perfect

• Do not overbake — moisture is key.
• Warm peanut butter for easy swirling.
• Use whole milk for richer texture.
• Let cool before slicing for clean cuts.
• Sprinkle flaky sea salt on top for gourmet finish.

Storage Instructions

Room Temperature: 2–3 days in airtight container.

Refrigerator: Up to 5 days.

Freezer: Freeze slices individually up to 2 months.

Reheat slightly for melty chocolate chips.

General Information

Cake mix recipes are one of my favorite kitchen shortcuts. They create consistent results while allowing room for creativity.

This cake is ideal for beginner bakers or busy families who want something homemade without the stress.

Chocolate and peanut butter? That combination never disappoints.

Frequently Asked Questions

Can I use crunchy peanut butter?

Yes! It will add texture.

Can I make cupcakes instead?

Absolutely — bake 18–22 minutes.

Can I add frosting?

Yes, chocolate ganache or peanut butter frosting works beautifully.

Can I reduce the sweetness?

Use dark chocolate cake mix and bittersweet chocolate chips.

How many servings does it make?

Approximately 12 slices.

Conclusion

This 5-Ingredient Chocolate PB Cake is rich, moist, and unbelievably easy. It’s the kind of dessert you can throw together quickly but serve proudly.

If you loved this recipe, try my 3-Ingredient Banana PB Brownies or 3-Ingredient Flourless PB Mug Cake next for more peanut butter goodness.

Thank you for baking with me. Now grab a slice while it’s still warm.

Interactive Elements

If you make this cake, leave a comment and star rating below — I love hearing how it turns out in your kitchen.

Share your chocolate creations on Pinterest and tag me at https://www.pinterest.com/poulefrecipe/ so I can see your beautiful bakes.

Nutritional Information (Approximate per slice – 12 servings)

Nutrient	Amount
Calories	290
Protein	6g
Carbohydrates	35g
Sugar	22g
Fat	14g
Saturated Fat	4g
Fiber	2g
Sodium	260mg

Values vary depending on cake mix brand.

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