introduction
Peanut Butter Brownie Bars are a delightful treat that combines rich chocolate brownie with creamy peanut butter. This recipe captures the flavor of classic brownies with an exciting twist, making it perfect for any occasion, from a casual snack to a special dessert.
why make this recipe
This recipe stands out due to its delicious layers of flavor and texture. The fudgy brownie base pairs beautifully with the smooth peanut butter filling and crisp chocolate topping. It’s easy to prepare and is sure to impress friends and family. Plus, who doesn’t love the combination of chocolate and peanut butter?
how to make Peanut Butter Brownie Bars
Ingredients :
- 115 grams unsalted butter, melted
- 200 grams (1 cup) caster sugar or granulated sugar
- 1 teaspoon vanilla extract
- 2 large eggs
- 1 egg yolk
- 40 grams (1/2 cup) cocoa powder, sifted
- 35 grams (1/4 cup) plain flour or all-purpose flour
- 1/4 teaspoon salt
- 60 grams (1/4 cup) unsalted butter, softened
- 250 grams (1 cup) smooth peanut butter, room temperature
- 65 grams (1/2 cup) icing sugar or powdered sugar
- 150 grams (1 cup) good quality dark chocolate, pieces
- 20 grams (1/2 cup) Rice Bubbles or Rice Krispies
- 1 teaspoon vegetable oil or coconut oil, optional
Directions :
- Preheat your oven to 180 C (350 F) for standard or 160 C (320 F) for fan-forced. Grease and line an 8-inch square baking pan with baking or parchment paper, letting two sides overhang.
- In a large mixing bowl, add the melted butter, sugar, and vanilla. Whisk gently together.
- Add the eggs, one at a time, along with the egg yolk. Then, mix in the cocoa powder, flour, and salt until just combined.
- Pour the brownie batter into the prepared pan. Bake for about 25-30 minutes. Leave it to cool completely. If you prefer, you can cover and place it in the fridge.
- To make the peanut butter filling, add the softened butter and peanut butter to another bowl. Use an electric mixer on medium speed until creamy.
- Mix in the icing sugar until everything is combined and smooth. Spread this filling on top of the cooled brownie and smooth the top. Return the brownie to the fridge.
- Heat the dark chocolate in the microwave, stirring every 20 seconds until it’s melted and smooth. Stir in the rice cereal until it’s fully coated. Add the oil if you’re using it.
- Pour the chocolate mixture over the peanut butter layer and spread it out. Place it in the fridge or freezer for at least 2 hours, until firm.
- Use a hot knife to carefully cut the bars into small slices to serve.
how to serve Peanut Butter Brownie Bars
Serve these bars chilled or at room temperature. They are great on their own or with a scoop of vanilla ice cream for an extra treat. You can also garnish with a sprinkle of sea salt or chopped peanuts for added flavor.
how to store Peanut Butter Brownie Bars
To store the bars, keep them in an airtight container in the fridge. They will stay fresh for about a week. If you want to keep them longer, you can freeze them for up to three months. Just make sure to wrap them well to prevent freezer burn.
tips to make Peanut Butter Brownie Bars
- For a richer taste, use high-quality dark chocolate.
- Make sure your peanut butter is at room temperature for easier mixing.
- You can adjust the sweetness by using more or less icing sugar in the peanut butter filling.
- Experiment with adding crushed nuts or even banana slices to the brownie mix for variation.
variation
You can swap the smooth peanut butter for crunchy peanut butter if you prefer some added texture. Additionally, you can add toppings like chopped nuts, mini chocolate chips, or a drizzle of caramel sauce for different flavor combinations.
FAQs
Can I use natural peanut butter for this recipe?
Yes, natural peanut butter can be used, but make sure it’s well-stirred and not too runny.
How do I know when my brownies are done baking?
The edges should look set and slightly pulling away from the sides of the pan. A toothpick inserted in the center should come out with a few moist crumbs.
Can I make these bars gluten-free?
Yes, substituting regular flour with a gluten-free flour blend can make these bars gluten-free. Make sure the other ingredients are also gluten-free.

Peanut Butter Brownie Bars
Ingredients
Method
- Preheat your oven to 180 C (350 F) for standard or 160 C (320 F) for fan-forced. Grease and line an 8-inch square baking pan with baking or parchment paper, letting two sides overhang.
- In a large mixing bowl, add the melted butter, sugar, and vanilla. Whisk gently together.
- Add the eggs, one at a time, along with the egg yolk. Then, mix in the cocoa powder, flour, and salt until just combined.
- Pour the brownie batter into the prepared pan. Bake for about 25-30 minutes. Leave it to cool completely. If you prefer, you can cover and place it in the fridge.
- To make the peanut butter filling, add the softened butter and peanut butter to another bowl. Use an electric mixer on medium speed until creamy.
- Mix in the icing sugar until everything is combined and smooth. Spread this filling on top of the cooled brownie and smooth the top. Return the brownie to the fridge.
- Heat the dark chocolate in the microwave, stirring every 20 seconds until it’s melted and smooth. Stir in the rice cereal until it’s fully coated. Add the oil if you’re using it.
- Pour the chocolate mixture over the peanut butter layer and spread it out. Place it in the fridge or freezer for at least 2 hours, until firm.
- Use a hot knife to carefully cut the bars into small slices to serve.
Notes

Name: Yumi HwagByline: Founder & Recipe Developer, YumimealsBio : Yumi tests weeknight-friendly air fryer, slow cooker, and BBQ recipes in a small home kitchen. She focuses on simple steps, real-family testing, and clear food-safety guidance. Contact: [email protected]


