Buckeye Brownies
Buckeye brownies are the ultimate treat that blend the rich flavors of chocolate and peanut butter into one indulgent dessert. Imagine biting into a fudgy brownie layered with creamy peanut butter and topped with a smooth chocolate ganache. The moment you taste these brownies, you will understand why they deserve a special spot in your dessert rotation. Perfect for any occasion, from sweetening up a casual night in to impressing guests at a party, these brownies are love at first bite.
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I first stumbled upon this delightful recipe at a friend’s gathering; the mouthwatering aroma filled the air, drawing me closer. As I took my first bite, I was hooked. The pairing of rich semisweet chocolate and velvety peanut butter was a flavor sensation I hadn’t expected. Now, I whip up these buckeye brownies whenever I’m craving something sweet. Their appeal lies not only in taste but also in how they can easily become the showstopper at any dessert table. Trust me, once you try this recipe, you won’t be able to resist making it over and over again!
Why You’ll Love This Recipe
- Simple & Quick: You can whip up these delicious brownies in about an hour from start to finish.
- Irresistible Flavor: The combination of fudgy chocolate and creamy peanut butter is absolutely mouthwatering.
- Eye-Catching Appeal: The layering of flavors not only tastes good but also looks impressive.
- Flexible Serving: Perfect for any occasion – bake for a potluck, special event, or just a cozy night at home.
- Crowd-Pleasing Treat: Everyone loves brownies, and this elevated treat takes them to the next level.
Ingredients You’ll Need
- 6 oz semisweet chocolate (1 cup): This brings rich chocolate flavor; ensure you’re using good quality chocolate for the best taste.
- ½ cup salted butter: Adds richness and helps with the brownie texture. Unsalted butter can be used, but adjust salt to taste.
- 2 large eggs: These provide structure and moisture for the brownie base.
- ¾ cup granulated sugar: Sweetens the brownies; feel free to reduce slightly if you prefer less sweetness.
- 2 teaspoons pure vanilla extract: Enhances the overall flavor; always opt for pure vanilla extract for the best taste.
- ¾ cup all-purpose flour: The backbone of the brownie base, giving it structure.
- 1 tablespoon unsweetened cocoa powder: Intensifies the chocolate flavor; Dutch-processed cocoa provides a deeper taste.
- ¼ teaspoon fine sea salt: Balances sweetness; use the same amount if using kosher salt.
- ¾ cup creamy peanut butter: The star of the show! Choose creamy for a smoother texture, though crunchy can add some fun.
- ¼ cup salted butter (softened): This contributes creaminess to the peanut butter layer.
- ½ teaspoon pure vanilla extract: It adds depth to the peanut butter layer; again, stick to pure extract for flavor.
- ¼ teaspoon fine sea salt: Amplifies flavors in the peanut butter layer.
- 1 ½ cups powdered sugar: Sweetens and thickens the peanut butter mixture. Use sifted sugar to avoid lumps.
- 1-2 tablespoons whole milk (room temperature): Adjusts consistency for the peanut butter filling; use heavy cream for a richer version.
- ½ cup heavy cream: This forms the ganache layer, contributing luscious creaminess.
- 1 cup semisweet chocolate (6 ounces): Essential for the chocolate ganache, ensuring it melts smoothly.
How to Make Buckeye Brownies
- Preheat the Oven: Begin by preheating your oven to 350 degrees Fahrenheit (177 degrees Celsius). Line a 9×9” baking dish with parchment paper and lightly grease it.
- Mix Dry Ingredients: In a small bowl, combine ¾ cup all-purpose flour, 1 tablespoon unsweetened cocoa powder, and ¼ teaspoon fine sea salt; set this aside for later.
- Melt Chocolate and Butter: In a microwave-safe bowl or on the stove over low heat, melt 6 oz semisweet chocolate and ½ cup salted butter together. Stir until smooth and glossy, then let it cool slightly.
- Beat Eggs and Sugar: In the bowl of a standing mixer, beat 2 large eggs for 1 minute. Then add ¾ cup granulated sugar and beat for another minute.
- Combine Wet Ingredients: Gradually add the melted chocolate mixture and 2 teaspoons pure vanilla extract to the egg mixture. Beat on low speed until everything is fully combined.
- Incorporate Dry Ingredients: Add the dry mixture to wet ingredients, mixing on low speed until just combined. Be careful not to overmix; the batter should be thick.
- Spread Batter in Pan: Evenly spread the brownie batter into the bottom of the prepared baking pan.
- Bake: Place the pan in the preheated oven and bake for 25 to 28 minutes. The topping should be set with a slight jiggle in the center.
- Cool Completely: Let the brownies cool completely in the pan on a wire cooling rack. You can speed this up by placing them in the fridge or freezer if pressed for time.
- Prepare the Peanut Butter Layer: In a mixer fitted with a paddle attachment, beat ¼ cup softened salted butter until smooth. Add ¾ cup creamy peanut butter and mix until well combined. Then incorporate ½ teaspoon pure vanilla extract and ¼ teaspoon fine sea salt.
- Incorporate Powdered Sugar: Gradually add 1 ½ cups powdered sugar, one cup at a time. Beat well after each addition. Then drizzle in 1 tablespoon of room temperature whole milk, adding another tablespoon if needed to reach the desired consistency.
- Spread Peanut Butter Mixture: Evenly spread the peanut butter mixture over the cooled brownies. For faster setting later, you could put it in the fridge for a bit.
- Make the Ganache: Warm ½ cup heavy cream over medium heat until it just starts to bubble around the edges; don’t let it boil. Remove from the heat and whisk in 1 cup semisweet chocolate until perfectly smooth.
- Cool Ganache: Let the ganache cool slightly, stirring occasionally until it thickens a little.
- Spread Ganache Over Brownies: Spread the chocolate ganache evenly over the peanut butter layer.
- Set the Brownies: Chill the brownies in the refrigerator or let them sit until the ganache sets at room temperature.
- Slice and Serve: Once set, cut the brownies into 16 squares and serve.
Storing & Reheating
To store your buckeye brownies, cover them tightly in an airtight container at room temperature for up to 3 days. For longer freshness, refrigerate for up to one week. If you decide to freeze them, wrap them securely and store them in the freezer for up to 3 months. When ready to enjoy, simply thaw at room temperature for about 1-2 hours. Reheat in the microwave for about 10-15 seconds if desired, noting that this may soften the ganache slightly.
Chef’s Helpful Tips
- Measure your flour correctly: Use the spoon and level method to avoid dense brownies.
- Don’t overbake: The brownies should still feel slightly jiggly in the center; they will continue to firm up as they cool.
- Use high-quality chocolate: It truly makes a difference in taste. Choose chocolate you enjoy snacking on!
- Let cool completely before frosting: This helps keep the peanut butter and ganache layers intact when cutting.
- Experiment with toppings: Think about adding crushed peanuts, drizzle of caramel, or even a sprinkle of sea salt for a fancy touch.
These buckeye brownies are a true testament to the classic combo of chocolate and peanut butter that everyone loves. Their rich flavor, fudgy texture, and impressive look are bound to make them a favorite in your home. Don’t hesitate to play around with variations; after all, baking is all about enjoying the process and getting a little creative. So, gather your ingredients, whip up a batch, and savor every delicious bite!

Recipe FAQs
Can I use natural peanut butter instead of creamy?
Yes, you can use natural peanut butter, but keep in mind that its consistency may be a bit different than creamy peanut butter. You might need to adjust the amount of powdered sugar and milk to get the right texture for your filling.
How do I know when the brownies are done baking?
The brownies are done when they are set on the edges and slightly jiggly in the center. A toothpick inserted should come out with a few moist crumbs. Overbaking can result in dry brownies.
Can I substitute dark chocolate for semisweet?
Absolutely! Dark chocolate can enhance the richness of the brownies. Just be sure to adjust the sugar slightly if it’s a very dark chocolate, as it can be less sweet.
How long do these brownies stay fresh?
When stored in an airtight container, buckeye brownies can last up to 3 days at room temperature or a week in the refrigerator. If frozen, they will maintain their quality for about 3 months.
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📖 Recipe Card

Buckeye Brownies
- Prep Time: 30 minutes
- Cook Time: 20-25 minutes
- Total Time: 0 hours
- Yield: 16 servings 1x
- Category: Desserts & Appetizers
- Method: Baking
- Cuisine: American
Description
These Buckeye Brownies are a delightful combination of rich chocolate and creamy peanut butter. Perfect for gatherings or a sweet snack, this easy recipe brings together simple ingredients to create a mouthwatering treat that’s sure to please any sweet tooth.
Ingredients
- 6 oz semisweet chocolate
- ½ cup salted butter
- 2 large eggs
- ¾ cup granulated sugar
- 2 teaspoons pure vanilla extract
- ¾ cup all-purpose flour
- 1 tablespoon unsweetened cocoa powder
- ¼ teaspoon fine sea salt
- ¾ cup creamy peanut butter
- ¼ cup salted butter (softened)
- ½ teaspoon pure vanilla extract
- ¼ teaspoon fine sea salt
- 1 ½ cups powdered sugar
- 1–2 tablespoons whole milk (room temperature)
- ½ cup heavy cream
- 1 cup semisweet chocolate (6 ounces)
Instructions
- Preheat the oven to 350°F (177°C).
- Line a 9×9-inch baking dish with parchment paper and lightly grease it.
- Melt 6 oz of semisweet chocolate and ½ cup salted butter together in a saucepan or microwave, stirring until smooth.
- In a mixing bowl, whisk together 2 large eggs, ¾ cup granulated sugar, and 2 teaspoons vanilla extract until well combined.
- Mix the melted chocolate mixture into the egg mixture until smooth.
- In another bowl, combine ¾ cup all-purpose flour, 1 tablespoon cocoa powder, and ¼ teaspoon fine sea salt. Gradually fold this dry mixture into the wet mixture until just combined.
- Pour the batter into the prepared baking dish and bake for 20-25 minutes until a toothpick comes out clean.
- Let the brownies cool completely in the pan before making the peanut butter filling.
- For the filling, beat together ¾ cup creamy peanut butter, ¼ cup softened salted butter, ½ teaspoon vanilla extract, and ¼ teaspoon fine sea salt until smooth.
- Gradually add in 1 ½ cups powdered sugar and 1-2 tablespoons of milk until you reach a creamy consistency.
- Spread the peanut butter filling evenly over the cooled brownies.
- To make the chocolate ganache, heat ½ cup heavy cream until it just starts to simmer, remove from heat, and stir in 1 cup of semisweet chocolate until melted and smooth.
- Pour the ganache over the peanut butter layer and spread evenly. Allow to set before cutting into squares.
Notes
Ensure all ingredients are at room temperature for a smoother batter.
For best results, let the brownies cool completely before adding the peanut butter layer.
Adjust the amount of milk in the filling for desired consistency.
Nutrition
- Serving Size: 1 brownie
- Calories: 280
- Sugar: 20g
- Sodium: 190mg
- Fat: 18g
- Saturated Fat: 9g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 29g
- Fiber: 1g
- Protein: 4g
- Cholesterol: 45mg
