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If you are a fan of rich chocolate and creamy peanut butter, then this Peanut Butter Stuffed Brownies Recipe is an absolute must-try. Imagine sinking your teeth into moist, fudgy brownies with a luscious layer of peanut butter cups baked right inside—each bite delivers a dreamy balance of chocolatey goodness and nutty sweetness that will keep you reaching for more. It’s the kind of treat that feels like a warm hug, perfect for sharing or indulging in solo moments of pure delight.

Ingredients You’ll Need
These ingredients are simple but vital—they come together beautifully to create the perfect texture, flavor, and presentation for your brownies. Each element plays its role: rich chocolate, fluffy eggs for structure, and peanut butter cups that bring a delightful surprise inside.
- 2 oz unsweetened chocolate, melted: Provides a deep, intense chocolate flavor that forms the base of the brownies.
- 1/3 cup canola oil: Adds moisture and keeps the brownies tender without weighing them down.
- 2 eggs: Help bind ingredients together and create a soft, fudgy texture.
- 1 cup sugar: Sweetens the batter just right, balancing the bitterness of the unsweetened chocolate.
- 3/4 cup flour: Gives structure and a tender crumb to the brownies.
- 1/2 tsp baking powder: Ensures a slight lift and prevents the brownies from becoming too dense.
- 1/2 tsp salt: Enhances all the flavors and balances the sweetness.
- 1 cup chocolate chips (semi-sweet or milk chocolate): Melts into a glossy topping that adds another layer of chocolate pleasure.
- 1 cup chopped peanut butter cups: Adds a delightfully crunchy texture and bursts of peanut butter within the layers.
- 1 bag peanut butter cups, unwrapped: The star ingredient that creates the luscious peanut butter center inside the brownies.
How to Make Peanut Butter Stuffed Brownies Recipe
Step 1: Prep Your Pan and Oven
Start by preheating your oven to 350°F (175°C). Get an 8-inch baking dish ready by either spraying it with non-stick spray or lining it with foil or parchment paper. This not only prevents sticking but also makes cleanup a breeze.
Step 2: Mix the Chocolate and Oil
In a bowl, combine the melted unsweetened chocolate and canola oil until smooth. This blend forms the rich chocolate foundation of your brownies, ensuring every bite is decadently moist.
Step 3: Add Eggs and Sugar
Next, stir in the eggs and sugar into your chocolate mixture. The eggs will give your brownies structure, while the sugar brings just the right amount of sweetness against the bitter chocolate.
Step 4: Incorporate Dry Ingredients
Whisk together the flour, baking powder, and salt, then gently fold this dry mixture into your wet ingredients. Mixing until just combined helps keep the brownies tender rather than cakey.
Step 5: Layer the Brownie Batter and Peanut Butter Cups
Spread half of your brownie batter evenly into the prepared baking dish. Then, layer the unwrapped peanut butter cups evenly on top. These candies are what makes this recipe truly special—they melt and create a dreamy peanut butter center.
Step 6: Add Remaining Batter and Bake
Pour the remaining brownie batter over the peanut butter cups, smoothing it out to cover fully. Bake in the oven for 20-25 minutes. You’ll know it’s ready when a toothpick inserted near the center comes out mostly clean, with just a few moist crumbs.
Step 7: Add Chocolate Chips and Melt
As soon as you take the brownies out of the oven, sprinkle the chocolate chips evenly on top. Cover the dish loosely with foil and let it sit for about 10 minutes—this lets the chips melt into a silky, shiny topping.
Step 8: Finish with Chopped Peanut Butter Cups
Use a spatula to gently spread the melted chocolate chips across the surface, then sprinkle with the chopped peanut butter cups for added texture and peanut butter bursts in every bite.
Step 9: Cool Before Slicing
Allow the brownies to cool completely in the pan. This resting time lets them set so you get clean, beautiful slices that showcase that irresistible peanut butter filling at the center.
How to Serve Peanut Butter Stuffed Brownies Recipe
Garnishes
To elevate your Peanut Butter Stuffed Brownies Recipe even further, consider dusting the top lightly with powdered sugar or a drizzle of melted peanut butter or chocolate. It adds a lovely visual contrast and hints at the flavors inside.
Side Dishes
This dessert pairs brilliantly with a scoop of vanilla ice cream or a dollop of whipped cream. For an adult twist, a glass of cold milk or a rich cup of coffee complements the indulgent peanut butter and chocolate layers perfectly.
Creative Ways to Present
Cut the brownies into bite-sized squares and serve on a platter with colorful toothpicks for easy grabbing at parties. You can also use cookie cutters to create fun shapes that make this Peanut Butter Stuffed Brownies Recipe even more festive for special occasions.
Make Ahead and Storage
Storing Leftovers
Once cooled, store any leftover brownies in an airtight container at room temperature. They stay fresh and chewy for 3-4 days, giving you plenty of time to enjoy every last bite without losing that signature peanut butter-stuffed goodness.
Freezing
You can freeze these brownies to enjoy later by wrapping them tightly in plastic wrap and then placing them in a freezer-safe container or bag. Frozen Peanut Butter Stuffed Brownies Recipe squares maintain their flavor and texture well for up to two months.
Reheating
To bring frozen brownies back to life, thaw them overnight in the refrigerator. Warm individual pieces in the microwave for about 15-20 seconds to revive that gooey, freshly-baked feel. Just avoid overheating to keep them from drying out.
FAQs
Can I use natural peanut butter instead of peanut butter cups?
While this recipe specifically calls for peanut butter cups to create that iconic gooey center, you could experiment with natural peanut butter for a different texture. Keep in mind it won’t have the same chocolate-peanut butter combo inside, but it will still add delicious flavor.
What if I don’t have canola oil? Can I substitute something else?
Absolutely! Vegetable oil or melted coconut oil can be used as substitutes for canola oil. Just make sure to use a neutral-flavored oil to avoid overpowering the brownies.
How do I know when the brownies are fully baked?
Look for a toothpick inserted near the center to come out mostly clean with a few moist crumbs. The brownies should still be soft and fudgy inside but not wet or raw.
Can I make this recipe gluten-free?
Yes, use a gluten-free all-purpose flour blend in place of regular flour. Just be sure the blend contains xanthan gum or a similar binder for the best texture in your Peanut Butter Stuffed Brownies Recipe.
Is it better to use semi-sweet or milk chocolate chips?
This depends on your preference! Semi-sweet chips add a rich, slightly bitter contrast to the sweet peanut butter, while milk chocolate chips keep the brownies sweeter and creamier. Both work wonderfully here.
Final Thoughts
There’s something truly magical about the way peanut butter and chocolate marry in this Peanut Butter Stuffed Brownies Recipe. Whether you’re baking for a crowd or treating yourself, these brownies deliver that perfect balance of rich, fudgy chocolate and creamy peanut butter that everyone loves. I promise once you try this recipe, it’ll become one of your all-time favorites—so grab your ingredients, preheat that oven, and get ready to create a dessert full of smiles and happy cravings.
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Print
Peanut Butter Stuffed Brownies Recipe
- Prep Time: 10 minutes
- Cook Time: 20-25 minutes
- Total Time: 35 minutes
- Yield: 12 servings
- Category: Dessert
- Method: Baking
- Cuisine: American
Description
Deliciously decadent Peanut Butter Stuffed Brownies featuring rich melted chocolate, creamy peanut butter cups nestled inside, and a luscious chocolate chip topping. These brownies combine the fudgy texture of classic brownies with the irresistible surprise of peanut butter candy inside, perfect for satisfying sweet cravings.
Ingredients
Brownie Batter
- 2 oz unsweetened chocolate, melted
- 1/3 cup canola oil
- 2 eggs
- 1 cup sugar
- 3/4 cup flour
- 1/2 tsp baking powder
- 1/2 tsp salt
Fillings and Toppings
- 1 cup chocolate chips (semi-sweet or milk chocolate)
- 1 cup chopped peanut butter cups
- 1 bag peanut butter cups, unwrapped
Instructions
- Preheat and Prepare Pan: Preheat your oven to 350°F (175°C) and prepare an 8-inch baking dish by spraying it with non-stick spray or lining with foil or parchment paper for easy removal.
- Mix Chocolate and Oil: In a large bowl, mix the melted unsweetened chocolate and canola oil until smooth and well combined.
- Add Eggs and Sugar: Stir the eggs and sugar into the chocolate and oil mixture until the batter is uniform and glossy.
- Incorporate Dry Ingredients: Add the flour, baking powder, and salt to the wet ingredients, mixing gently until just combined to avoid overworking the batter.
- Layer Batter and Peanut Butter Cups: Spread half of the brownie batter evenly in the prepared baking dish. Place the unwrapped peanut butter cups evenly over this brownie layer, ensuring full coverage.
- Top with Remaining Batter: Pour the remaining brownie batter over the peanut butter cups and spread it evenly with a spatula.
- Bake: Bake in the preheated oven for 20 to 25 minutes, or until a toothpick inserted in the center comes out mostly clean with just a few moist crumbs.
- Add Chocolate Chips and Melt: Immediately after removing from the oven, sprinkle the chocolate chips evenly over the hot brownies. Cover with foil and let sit for 10 minutes to allow the chocolate chips to melt smoothly.
- Spread Melted Chocolate and Add Chopped Peanut Butter Cups: Using a spatula, spread the melted chocolate chips over the surface of the brownies. Sprinkle the chopped peanut butter cups on top for added texture and flavor.
- Cool and Serve: Allow the brownies to cool completely at room temperature before slicing into 12 servings. Serve and enjoy!
Notes
- Use high quality unsweetened chocolate for the best rich flavor.
- Ensure not to overmix the batter to keep the brownies fudgy.
- Cooling completely is important for clean slices with the peanut butter cups inside.
- Storage: Keep leftovers in an airtight container at room temperature for up to 3 days or refrigerate for up to a week.
- For an extra indulgence, serve warm with a scoop of vanilla ice cream.

