These chocolate peanut butter swirl muffins combine a soft, chocolate muffin with ribbons of creamy peanut butter for a treat that’s perfect any time of day. They’re easy to make with simple ingredients and deliver the classic chocolate-peanut butter combination in every bite.
If you love chocolate and peanut butter together, these muffins are sure to become a favorite. A rich chocolate batter is layered with warm, swirled peanut butter, creating tender muffins with just the right balance of both flavors.
These muffins are simple enough for everyday baking but special enough to satisfy a chocolate craving. Enjoy one with your morning coffee, as an afternoon snack, or whenever you’re in the mood for a homemade treat. With pantry-friendly ingredients and an easy swirling technique, they’re just as fun to make as they are to eat.
Why You’ll Love These Chocolate Peanut Butter Muffins
These muffins are an easy way to enjoy the classic combination of chocolate and peanut butter. Here are just a few reasons to give them a try:
- Classic flavor combination. Chocolate and peanut butter are a perfect match, and these muffins bring them together in every bite.
- Soft and tender. These muffins have a moist, tender crumb that’s substantial enough for breakfast but just right for an afternoon treat.
- Simple ingredients. You’ll only need a handful of baking staples plus creamy peanut butter to make a batch.
- Easy swirling technique. Warming the peanut butter makes it easy to swirl into the batter for beautiful ribbons of peanut butter throughout the muffins.
- Perfect for sharing. Make a batch for weekend baking, afternoon treats, or whenever you’re craving something homemade with a little chocolate and peanut butter.
Key Ingredients
You’ll find the full ingredient list and step-by-step instructions in the recipe card below. Here are a few of the key ingredients that make these chocolate peanut butter swirl muffins so delicious.
- Unsweetened cocoa powder – Regular unsweetened cocoa powder gives these muffins their rich chocolate flavor. I recommend using natural cocoa powder rather than Dutch-process cocoa for this recipe.
- Creamy peanut butter – Creamy peanut butter creates smooth swirls throughout the muffins. Warm it briefly before swirling so it’s easy to drizzle into the batter. I recommend using a regular creamy peanut butter (such as Jif or Skippy) rather than a natural variety, which can separate and won’t swirl as consistently.
- Sour cream – A little sour cream helps create a soft, tender crumb while adding just a touch of richness.
- Oil and butter – Using both oil and butter gives you the best of both worlds: butter adds flavor, while oil helps keep the muffins moist.
- Brown sugar – A small amount of brown sugar complements the chocolate and peanut butter while helping keep the muffins soft.
How to Make Chocolate Peanut Butter Swirl Muffins
Ready to bake? Here’s an overview of the process. You’ll find the full recipe with ingredient amounts and detailed instructions in the recipe card below.
Mix the dry ingredients.
Whisk together the flour, cocoa powder, granulated sugar, brown sugar, baking powder, baking soda, and salt until well combined. This helps evenly distribute the leavening and cocoa powder throughout the batter.
Mix the wet ingredients.
In a separate bowl, whisk together the melted butter, oil, eggs, milk, sour cream, and vanilla until smooth.
Finish the batter.
Add the wet ingredients to the dry ingredients, and mix just until combined. The batter will be thick, so be careful not to over-mix.
Swirl the peanut butter.
Warm the peanut butter just until it’s pourable but still thick. Layer the batter and peanut butter in each muffin cup, then use a toothpick or thin knife to make just a few gentle swirls. Avoid over-swirling, which can muddy the ribbons of peanut butter.
Bake.
Bake the muffins at 400°F for 5 minutes, then reduce the oven temperature to 350°F and continue baking until a pick inserted into the center comes out with a few moist crumbs.
Tips for Success
- Measure the flour accurately. Too much flour can make the muffins dry and dense. For the best results, weigh the flour or use the spoon-and-level method.
- Don’t over-mix. Mix the batter just until the dry ingredients are incorporated. Over-mixing can lead to tough muffins.
- Warm the peanut butter gently. Heat it just until it’s pourable but still thick. If it gets too hot or runny, it won’t swirl as nicely into the batter.
- Swirl lightly. A few gentle passes with a toothpick or thin knife are all you need. Over-swirling blends the peanut butter into the batter instead of creating distinct ribbons.
- Check for doneness early. Ovens vary, so start checking the muffins near the lower end of the baking time. They’re done when a pick inserted into the center comes out with a few moist crumbs.
How to Store
Room temperature: Once the muffins have cooled completely, store them in an airtight container at room temperature for up to 3 days.
Refrigerator: For longer storage, refrigerate the muffins in an airtight container for up to 1 week. Bring them to room temperature or warm them briefly in the microwave before serving for the best texture.
Freezer: Place the cooled muffins in a freezer-safe container or resealable bag, and freeze for up to 3 months. Thaw at room temperature or warm individual muffins in the microwave.
Chocolate and Peanut Butter, Baked into Every Bite
These chocolate peanut butter swirl muffins are proof that a classic flavor combination never goes out of style. With a soft chocolate muffin, ribbons of creamy peanut butter, and an easy mixing method, they’re a treat that’s just as welcome with your morning coffee as it is for an afternoon snack.
If you love baking with chocolate and peanut butter, you might also enjoy my chocolate chip peanut butter snack cake, buckeye brownies, and chocolate peanut butter rice crispy treats.
More Chocolate-Filled Quick Breads
Chocolate Peanut Butter Swirl Muffins
Ingredients
- 1 ¾ cups (210 g) all-purpose flour
- ½ cup (42 g) unsweetened natural cocoa powder
- ¾ cup (150 g) granulated sugar
- ¼ cup (50 g) firmly packed light brown sugar
- 2 teaspoons baking powder
- ½ teaspoon baking soda
- 1 teaspoon salt
- ¼ cup (56 g) unsalted butter, melted and slightly cooled
- ¼ cup (60 ml) neutral oil, like vegetable or canola oil
- 2 large eggs, at room temperature
- ¾ cup (180 ml) milk
- ¼ cup (56 g) sour cream, or plain Greek yogurt
- 2 teaspoons vanilla extract
- ⅓ cup (75 g) creamy peanut butter
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Instructions
- Preheat the oven to 400°F (200°C). Line a 12-cup muffin pan with paper liners.
- Whisk together the flour, cocoa powder, sugar, brown sugar, baking powder, baking soda, and salt in a large bowl.
- In a separate bowl, whisk together the butter, oil, eggs, milk, sour cream, and vanilla until smooth.
- Add the wet ingredients to the dry ingredients. Mix just until combined. (The batter will be fairly thick.)
- Microwave the peanut butter in short bursts (10-15 seconds) until pourable but thick (like warm honey).
- Fill each muffin cup about 1/3 full. Add a drizzle of peanut butter, then top with a spoonful of the remaining batter and another drizzle of peanut butter. Use a toothpick or thin knife to swirl gently.
- Bake for 5 minutes.
- Reduce the heat to 350°F (175°C). Bake 12 to 15 minutes, or until a pick inserted into the center comes out with just a few moist crumbs.
- Cool in the pan on a wire rack for 10 minutes. Then remove the muffins from the pan to cool completely.
Notes
- Peanut butter: For the best results, use a regular creamy peanut butter, such as Jif or Skippy. Natural peanut butter can separate and may not swirl as smoothly into the batter.
- Warm as needed: If the peanut butter thickens while you’re assembling the muffins, warm it again for a few seconds to keep it easy to drizzle and swirl.
- Don’t over-mix: Mix the batter just until combined for the most tender muffins.
- Store tightly covered at room temperature up to 3 days.
