Buckeye Fudge Peanut Butter Bars

Category: Sweet Endings

Buckeye Brownies combine layers of chocolatey fudge, a creamy peanut butter middle, and glossy ganache for an irresistible treat. Start by baking dense brownies in a pan, then let them cool. Next, blend peanut butter with powdered sugar and a hint of vanilla until smooth, spreading the mixture over the cooled base. Finally, pour a silky ganache made from melted chocolate and warm cream on top. Chill the finished bars until they set, ensuring clean slices with a wiped knife. Every bite delivers the perfect balance of chocolate and peanut butter flavors, making these bars a favorite at gatherings and bake sales.

A woman in a chef's outfit poses for a picture.
Updated on Wed, 21 May 2025 20:48:30 GMT
A plate with two pieces of Buckeye Brownies. Pin
A plate with two pieces of Buckeye Brownies. | applefoodie.com

Buckeye Brownies are the best answer whenever I am craving the ultimate combination of rich chocolate and creamy peanut butter. Imagine layers of ultra fudgy homemade brownie topped with a thick peanut butter filling and finished with a shiny chocolate ganache. This recipe never fails to impress at family gatherings and every bite feels like a treat.

I first made these Buckeye Brownies for a big game day and everyone instantly asked for seconds. Now they are my go to whenever my family wants something indulgent but absolutely doable from scratch.

Ingredients

  • All purpose flour: brings structure and holds the brownies together Select a fresh bag to avoid stale flavors
  • Salt: balances the sweetness and enhances the chocolate Always use pure salt rather than salt blends
  • Unsweetened natural cocoa powder: provides deep chocolate flavor Choose a high quality dark cocoa for the best brownie base
  • Unsweetened chocolate: intensifies the fudgy texture Buy solid bars instead of chips for better melting
  • Unsalted butter: adds richness throughout the brownies and peanut butter layer Pick high fat creamy sticks for the most luscious results
  • Granulated sugar: sweetens while keeping the brownies chewy Use fine baking sugar for a smooth crumb
  • Large eggs: bind the batter and create that crave worthy texture Try to use room temperature eggs for even mixing
  • Vegetable oil: maintains moistness and keeps the edges soft Opt for mild tasting oil like canola or sunflower
  • Vanilla extract: infuses warmth into both batter and filling Seek out real extract rather than imitation for the best taste
  • Creamy peanut butter: forms the heart of the filling Use a standard processed type such as Jif or Skippy for smoothest results
  • Powdered sugar: creates that sweet fluffy peanut butter layer Always sift if your sugar is clumpy
  • Heavy cream: softens the filling and ensures a smooth ganache Pick a fresh carton and check the date for best results
  • Semi sweet chocolate chips: make for a glossy ganache topping Go for real chocolate chips rather than baking morsels to ensure smooth melting

Step by Step Instructions

Prepare and Preheat:
Set your oven to 350 degrees F and line a nine by thirteen inch baking pan with parchment paper Be generous with the overhang for easy removal
Mix Dry Ingredients:
Thoroughly whisk flour salt and cocoa powder together in a medium bowl This prevents pockets of cocoa from forming and ensures an even flavor throughout
Melt Chocolate and Butter:
Place chopped unsweetened chocolate and cubed butter in a small saucepan over low heat Stir gently until melted and completely smooth This step is key for a shiny crackly brownie top
Beat Eggs and Sugar:
In a large mixing bowl or stand mixer beat granulated sugar and eggs for a full minute until pale and doubled in volume This adds life to the brownies by whipping in much needed air
Combine Wet Ingredients:
With the mixer on low slowly drizzle in the warm melted chocolate mixture Then add vegetable oil and vanilla extract blending everything to a consistent mixture
Mix Batter:
Gradually add dry ingredients into the wet mixture Stir just until the batter is smooth Resist over mixing for the chewiest results
Bake and Cool:
Pour the batter into the lined pan and level the surface Bake for twenty five to thirty five minutes The brownies are ready when a toothpick comes out with moist crumbs Cool the brownies fully in the pan for best layering
Make Peanut Butter Filling:
Beat creamy peanut butter softened butter and vanilla extract in a medium bowl until silky and even Gradually add powdered sugar on low and then on medium speed until you have a thick crumbly mixture If too stiff beat in a splash of heavy cream The texture should be thick yet spreadable
Spread Filling:
Dollop the peanut butter mixture over cooled brownies and spread evenly to the sides Use an offset spatula for a neat finish
Make Ganache:
Place chocolate chips in a heat safe bowl Heat heavy cream in a small pot just until it simmers Pour the hot cream over the chocolate and let it sit for a minute or two Stir gently until totally smooth
Top and Chill:
Pour ganache over the peanut butter layer Gently spread to cover Refrigerate for at least an hour so the bars firm up This makes slicing clean and easy
A plate of buckeye brownies. Pin
A plate of buckeye brownies. | applefoodie.com

The best part for me is swirling the ganache over that peanut butter layer My daughter always helps at this part and it is a kitchen memory I hope she will keep I can never resist sneaking a square before the whole batch disappears

Storage Tips

Buckeye Brownies are best stored in the refrigerator Covered tightly with foil or an airtight lid they will stay fresh and fudgy for up to five days You can also freeze them cut into squares with parchment between layers They thaw beautifully at room temperature

Ingredient Substitutions

If you are out of unsweetened chocolate add an extra quarter cup of cocoa powder plus two tablespoons butter to the mix Almond or cashew butter can sometimes be swapped for peanut butter if allergies are a concern Just make sure it is creamy and not too oily

Serving Suggestions

Serve Buckeye Brownies cold from the fridge for sharp clean layers or let them rest at room temp for a gooier bite For parties drizzle with a little extra melted chocolate or top with chopped peanuts for crunch They pair beautifully with a cup of coffee or cold milk

A stack of buckeye brownies. Pin
A stack of buckeye brownies. | applefoodie.com

Cultural History

Buckeye Brownies borrow their flavor from the classic Buckeye candy which originated in Ohio Named for the buckeye tree nut these treats are a sweet staple at Midwest gatherings and game days Brownies were my twist to make the treat even more craveable

Frequently Asked Questions About the Recipe

→ What makes Buckeye Brownies unique?

The signature layers: a rich brownie base, creamy peanut butter filling, and smooth ganache topping create irresistible contrast in texture and taste.

→ How do I get a clean cut for each bar?

Wipe your knife between each slice with a warm, damp towel to ensure neat, bakery-style pieces.

→ Can I use crunchy peanut butter instead of creamy?

Yes, but the topping will have more texture. Smooth peanut butter yields a classic, creamy finish.

→ How long should I chill before serving?

For best results, chill in the refrigerator for at least 1 hour or until completely set and easy to slice.

→ Is it possible to freeze the finished bars?

They freeze well—wrap tightly and freeze up to 2 months. Thaw in the fridge before serving for best texture.

Buckeye Fudge Peanut Butter

Fudgy brownies with peanut butter and chocolate ganache layers for a classic chocolate-lover’s delight.

Preparation Time
30 min
Cook Time
35 min
Total Time
65 min
By: Ava

Category: Desserts

Skill Level: Intermediate

Cuisine: American

Yield: 24 Serves (24 brownies)

Dietary Preferences: Vegetarian

Ingredients

→ Brownie Base

01 180 g all-purpose flour
02 1 tsp salt
03 53 g unsweetened natural cocoa powder
04 113 g unsweetened chocolate, chopped
05 226 g unsalted butter, cubed
06 495 g granulated sugar
07 4 large eggs
08 118 ml vegetable oil
09 2 tsp vanilla extract

→ Peanut Butter Layer

10 405 g creamy peanut butter
11 113 g unsalted butter, softened
12 339 g powdered sugar
13 1 tsp vanilla extract
14 1 tbsp heavy cream, if needed

→ Chocolate Ganache

15 255 g semi-sweet chocolate chips
16 6 tbsp heavy whipping cream

Steps

Step 01

Preheat oven to 175°C. Line a 23x33 cm baking pan with parchment, leaving an overhang. Set aside.

Step 02

In a medium bowl, whisk together flour, salt, and cocoa powder.

Step 03

In a small saucepan over low heat, melt chopped unsweetened chocolate and cubed butter, stirring occasionally, until smooth.

Step 04

In the bowl of a mixer, beat granulated sugar and eggs for 60 seconds until pale and doubled in volume.

Step 05

Gradually add melted chocolate mixture to sugar and eggs on low speed. Mix in vegetable oil and vanilla extract until fully blended.

Step 06

Fold the dry mixture into the wet ingredients, mixing just until combined. Do not overmix.

Step 07

Spread batter evenly in prepared pan. Bake 25–35 minutes until centre is set. Cool completely in pan.

Step 08

In a medium bowl, beat creamy peanut butter, softened butter, and vanilla extract on medium speed until smooth.

Step 09

Gradually mix in powdered sugar, starting on low speed, until the mixture is thick and slightly crumbly.

Step 10

If needed, add 1 tablespoon heavy cream to achieve a thick, spreadable consistency.

Step 11

Once brownies are cool, spread peanut butter layer evenly over surface.

Step 12

Place chocolate chips in a heatproof bowl. In a small pot, heat heavy cream over low until just simmering. Pour hot cream over chocolate chips and let stand 1–2 minutes.

Step 13

Stir chocolate and cream mixture until smooth and glossy.

Step 14

Spread ganache evenly over peanut butter layer. Refrigerate for at least 1 hour or until set before slicing with a clean, sharp knife. Serve chilled.

Notes & Tips

  1. For clean layers and precise cuts, wipe the knife between slices and ensure brownies are fully chilled before serving.

Necessary Equipment

  • 23x33 cm baking pan
  • Electric mixer or stand mixer
  • Small saucepan
  • Heatproof mixing bowls
  • Parchment paper
  • Spatula

Allergy Information

Always double-check ingredient labels for allergens and consult a healthcare professional if you’re unsure.
  • Contains peanuts
  • Contains milk and dairy
  • Contains eggs
  • Contains gluten (wheat)

Nutritional Facts (Per Serving)

These details are for informational purposes and should not be considered medical advice.
  • Calories: 372
  • Fats: 22 g
  • Carbohydrates: 41 g
  • Proteins: 6 g