Buckeye Brownies are a delightful dessert that combines the rich flavors of chocolate brownies with a creamy peanut butter filling. Topped with a smooth chocolate ganache, these treats are perfect for chocolate and peanut butter lovers alike. They are easy to make and are sure to satisfy any sweet tooth!

Why Make This Recipe
If you love the classic combination of chocolate and peanut butter, Buckeye Brownies are a must-try. They are great for parties, gatherings, or just a special treat at home. The recipe combines simple ingredients to create a big impact in flavor. They’re fun to make and even more fun to eat!
How to Make Buckeye Brownies
Ingredients:
- 6 ounces dark chocolate, chopped
- ¾ cup unsalted butter
- 1 ¼ cups granulated sugar
- ⅓ cup dark brown sugar, packed
- 3 large eggs, room temperature
- ¾ teaspoon salt
- 1 tablespoon cornstarch
- ¼ teaspoon baking powder
- ¼ cup cocoa powder
- 1 cup all-purpose flour
- 2 cups creamy peanut butter
- ⅓ cup unsalted butter, room temperature
- 1 ½ teaspoons vanilla extract
- 2 cups powdered sugar
- 2 tablespoons milk
- 1 ½ cups semi-sweet chocolate chips
- 2 tablespoons vegetable oil
Directions:
Brownie Layer:
- Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking pan.
- Melt the dark chocolate and butter together in a bowl over simmering water. Stir until smooth and set aside to cool slightly.
- In a separate bowl, mix granulated sugar, brown sugar, and eggs until well combined. Add the melted chocolate mixture and stir well.
- In another bowl, combine salt, cornstarch, baking powder, cocoa powder, and flour. Gradually mix this dry mixture into the wet mixture until just combined. Spread the brownie batter into the prepared pan.
Peanut Butter Layer:
- In a bowl, mix creamy peanut butter, room temperature butter, and vanilla extract until smooth.
- Add powdered sugar and milk, mixing until well combined. Spread this peanut butter layer evenly over the brownie layer.
Ganache:
In a small saucepan, melt the semi-sweet chocolate chips and vegetable oil over low heat, stirring until smooth.
Pour the ganache over the peanut butter layer, spreading it evenly.
Bake in the preheated oven for about 30-35 minutes, or until set. Allow to cool before cutting into squares.
How to Serve Buckeye Brownies
Serve your Buckeye Brownies at room temperature or slightly chilled. They can be cut into squares and arranged on a platter for a fun dessert presentation. A dollop of whipped cream or a scoop of vanilla ice cream can make this treat even more special!
How to Store Buckeye Brownies
Store your Buckeye Brownies in an airtight container. They can stay fresh at room temperature for up to 3 days or in the refrigerator for up to a week. If you want to keep them for longer, you can freeze them for up to 3 months. Just make sure to wrap them well!
Tips to Make Buckeye Brownies
- Make sure all your ingredients are at room temperature for better mixing.
- Don’t overbake the brownies; they should be soft in the middle for a fudgy texture.
- Feel free to add chopped nuts or chocolate chips to the brownie layer for added texture.
Variation
You can try using crunchy peanut butter instead of creamy for a different texture. Adding a sprinkle of sea salt on top of the ganache can also enhance the flavor.
FAQs
1. Can I make these brownies ahead of time?
Yes! Buckeye Brownies can be made a day in advance. Just store them in an airtight container.
2. How do I know when they are done baking?
The brownies are done when the edges look firm and the center is set but still a bit soft. A toothpick inserted in the center should come out with a few moist crumbs.
3. Can I use milk chocolate instead of dark chocolate?
Yes, you can use milk chocolate! It will give the brownies a sweeter taste, which complements the peanut butter nicely.
Enjoy your Buckeye Brownies!

Buckeye Brownies
Ingredients
Brownie Layer
- 6 oz dark chocolate, chopped
- ¾ cup unsalted butter
- 1 ¼ cups granulated sugar
- ⅓ cup dark brown sugar, packed
- 3 large eggs, room temperature
- ¾ teaspoon salt
- 1 tablespoon cornstarch
- ¼ teaspoon baking powder
- ¼ cup cocoa powder
- 1 cup all-purpose flour
Peanut Butter Layer
- 2 cups creamy peanut butter
- ⅓ cup unsalted butter, room temperature
- 1 ½ teaspoons vanilla extract
- 2 cups powdered sugar
- 2 tablespoons milk
Ganache
- 1 ½ cups semi-sweet chocolate chips
- 2 tablespoons vegetable oil
Instructions
Prepare Brownie Layer
- Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking pan.
- Melt the dark chocolate and butter together in a bowl over simmering water. Stir until smooth and set aside to cool slightly.
- In a separate bowl, mix granulated sugar, brown sugar, and eggs until well combined. Add the melted chocolate mixture and stir well.
- In another bowl, combine salt, cornstarch, baking powder, cocoa powder, and flour. Gradually mix this dry mixture into the wet mixture until just combined.
- Spread the brownie batter into the prepared pan.
Prepare Peanut Butter Layer
- In a bowl, mix creamy peanut butter, room temperature butter, and vanilla extract until smooth.
- Add powdered sugar and milk, mixing until well combined. Spread this peanut butter layer evenly over the brownie layer.
Prepare Ganache
- In a small saucepan, melt the semi-sweet chocolate chips and vegetable oil over low heat, stirring until smooth.
- Pour the ganache over the peanut butter layer, spreading it evenly.
Bake
- Bake in the preheated oven for about 30-35 minutes, or until set.
- Allow to cool before cutting into squares.


