These peanut butter brownies are rich, fudgy, and easy to whip up. Loaded with chocolatey goodness and topped with a creamy peanut butter swirl, they’re the ultimate sweet treat!
If you’re a fan of chocolate and peanut butter together (I mean who isn’t?!), you’re going to be obsessed with these peanut butter brownies. They’re thick, fudgy, and swirled with peanut butter on top for the best flavor combo.
These brownies are a bit more decadent than some of my other brownie recipes (like my black bean brownies), but they are 100% worth it and guaranteed to satisfy any sweet tooth. I can’t wait for you to try them!
And if you’re as obsessed with the combo of peanut butter and chocolate, don’t miss my healthy peanut butter balls or chocolate peanut butter cookies — both are absolutely delicious!
Why You’ll Love These Brownies
- Rich and fudgy – These brownies have the perfect dense, fudgy texture with just the right amount of chew.
- Simple ingredients – Made with pantry staples you probably already have on hand.
- Peanut butter and chocolate – This classic combo is a match made in dessert heaven. Enough said!
- Decadent and indulgent – These brownies are everything you want in a classic treat—rich, fudgy, and totally satisfying.
Ingredients Needed
You only need 10 simple ingredients for these ultra fudgy peanut butter brownies, and I bet you already have most of them in your pantry.
- butter – helps give these brownies their rich, classic texture. I used unsalted butter, but if you’re using salted, just reduce the added salt a bit.
- chocolate chips – melted with the butter for that deep, chocolatey base. I used semi-sweet chips, but use your favorite variety.
- creamy peanut butter – the star of the show! We’re mixing peanut butter into the batter and adding it on top for that gorgeous swirl! Look for a natural, creamy peanut butter that’s made with just one or two ingredients: peanuts and salt.
- eggs – necessary for giving the brownies structure.
- coconut sugar – my go-to for a natural sweetener with a light caramel flavor. Cane sugar works as well.
- unsweetened almond milk – just a splash to thin the batter slightly. Use whatever milk you have on hand.
- unsweetened cocoa powder – boosts the chocolate flavor and gives the brownies that deep color. Make sure you’re using unsweetened cocoa powder. Cacao powder works as well. I really like Navitas organic cacao powder.
- all-purpose flour – gives structure without making the brownies cakey.
Find the full ingredient list with measurements in the recipe card below.
Easy Recipe Substitutions
- Butter: You can use vegan butter or melted coconut oil if needed.
- Peanut butter: Use almond butter, cashew butter or your favorite nut butter.
- Make them nut-free: Use sunflower seed butter or tahini instead.
- Gluten free brownies: I haven’t tested it, but a 1:1 gluten-free all-purpose flour blend should work well here. You could also try my oat flour brownies or avocado brownies for a tasty gluten-free brownie!
How to Make Peanut Butter Brownies
Step 1: Add the butter and chocolate chips to a large mixing bowl. Melt in the microwave in 30-second increments, stirring between each, until fully melted.
Step 2: Add the peanut butter, eggs, coconut sugar, almond milk, and vanilla to the melted chocolate mixture. Whisk to combine.
Step 3: In a separate medium bowl, whisk together the flour, cocoa powder, and salt.
Step 4: Add the dry ingredients to the wet ingredients. Stir until fully combined.
Step 5: Pour the batter into the prepared baking pan. Add dollops of peanut butter on top and use a toothpick to swirl.
Step 6: Bake for 20–25 minutes, or until a toothpick inserted into the center comes out clean. Cool completely, then cut and enjoy!
Brittany’s Tips For The Best Brownies
- Don’t over bake: You want the toothpick to come out with just a few moist crumbs for that perfect fudgy texture.
- Swirl gently: Use a toothpick or knife to create a pretty swirl with the peanut butter on top, but don’t over mix or it’ll disappear into the batter.
- Let them cool: I know it’s hard, but letting them cool completely helps the brownies set so you get clean slices (and no crumbles!).
How to Store Peanut Butter Brownies
Once the brownies are completely cool, store them in an airtight container at room temperature for 2–3 days or in the fridge for up to 5 days.
I personally like them chilled — they get even fudgier! For longer storage, freeze individual brownies in a sealed container or freezer-safe bag for up to 3 months. Just thaw overnight in the fridge or on the counter when you’re ready to enjoy.
Frequently Asked Questions
I recommend natural peanut butter (the kind with just peanuts and salt) because it’s runnier and easier to swirl. If you use a no-stir or thicker peanut butter, it might not blend into the batter as easily, but it’ll still taste great.
You can swap the coconut sugar with regular cane sugar or light brown sugar. I haven’t tested this recipe with liquid sweeteners like maple syrup or honey, so I’d stick with dry sweeteners here for the best texture.
They’re ready when a toothpick inserted near the center comes out mostly clean with a few moist crumbs — you don’t want to overbake or they’ll lose that fudgy texture.
More Brownie Recipes to Try
Be sure to check out the full collection of dessert recipes on EBF!
If you enjoyed this recipe, please consider leaving a star rating and let me know how it went in the comments below.
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Preheat oven to 350°F and line an 8×8-inch pan with parchment paper or spray with cooking spray.
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Add the butter and chocolate chips to a large mixing bowl. Melt in the microwave in 30-second increments, stirring between each, until fully melted. Let cool slightly.
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Add the peanut butter, eggs, coconut sugar, almond milk, and vanilla to the melted chocolate mixture. Whisk to combine.
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In a separate medium bowl, whisk together the flour, cocoa powder, and salt.
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Add the dry ingredients to the wet ingredients and stir until fully combined.
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Pour the batter into the prepared baking pan. Add dollops of peanut butter on top and use a toothpick to swirl.
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Bake for 20–25 minutes, or until a toothpick inserted into the center comes out clean.
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Let the brownies cool completely, then cut into squares and enjoy!
Prevent your screen from going dark
- How to store: Let the brownies cool completely then store in an airtight container at room temperature for 2–3 days or in the fridge for up to 5 days. For longer storage, freeze individual brownies in a sealed container or freezer-safe bag for up to 3 months. Just thaw overnight in the fridge or on the counter when you’re ready to enjoy.
Serving: 1brownie | Calories: 193kcal | Carbohydrates: 23g | Protein: 5g | Fat: 11g | Saturated Fat: 4g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 3g | Cholesterol: 8mg | Sodium: 79mg | Potassium: 258mg | Fiber: 2g | Sugar: 16g
Nutrition information is automatically calculated, so should only be used as an approximation.
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