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Peanut Butter Brownie Bars

A delightful dessert combining rich chocolate brownie with creamy peanut butter filling, perfect for any occasion.
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Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings: 16 bars
Course: Dessert, Snack
Cuisine: American
Calories: 290
Ingredients Method Notes

Ingredients
  

For the Brownie Base
  • 115 grams unsalted butter, melted Essential for a moist base.
  • 200 grams caster sugar or granulated sugar Balances the rich cocoa and peanut butter.
  • 1 teaspoon vanilla extract Adds a warm, aromatic essence.
  • 2 large eggs Brings richness to every bite.
  • 1 large egg yolk Adds extra richness.
  • 40 grams cocoa powder, sifted Key player for chocolate flavor.
  • 35 grams plain flour or all-purpose flour Provides structure.
  • 1/4 teaspoon salt Enhances flavors.
For the Peanut Butter Filling
  • 60 grams unsalted butter, softened Adds a creamy consistency.
  • 250 grams smooth peanut butter, room temperature The star of this dessert.
  • 65 grams icing sugar or powdered sugar Provides a sweet peanut buttery flavor.
For the Chocolate Topping
  • 150 grams good-quality dark chocolate, pieces Melts to create a luscious topping.
  • 20 grams Rice Bubbles or Rice Krispies Adds crunch.
  • 1 teaspoon vegetable oil or coconut oil, optional For a glossy finish.

Method
 

Preparation
  1. Preheat your oven to 180°C (350°F). Prepare an 8-inch square baking pan by greasing and lining it with parchment paper.
  2. In a large mixing bowl, combine the melted butter, sugar, and vanilla extract. Gently whisk together.
  3. Add the eggs one at a time and the egg yolk, mixing well. Gradually incorporate the cocoa powder, flour, and salt until just combined.
Baking
  1. Pour the brownie batter into the prepared pan and bake for approximately 25-30 minutes. Let cool completely, then refrigerate if ready to assemble later.
Filling
  1. In a large bowl, combine the softened butter and peanut butter. Whip together until creamy, then add in the icing sugar and mix until smooth.
  2. Spread the peanut butter filling over the cooled brownie layer and return to the fridge to set.
Topping
  1. Melt the chocolate using a microwave in short bursts, stirring until smooth. If desired, stir in oil.
  2. Fold in the Rice Bubbles until coated with chocolate.
  3. Pour the chocolate-covered cereal on top of the peanut butter layer and spread to create an even layer.
  4. Place back in the fridge or freezer for at least 2 hours to firm up.
Serving
  1. When ready, use a hot knife to carefully slice the bars into small squares and serve.

Notes

Chill thoroughly to cut cleanly. Bars can be made ahead of time and stored in the fridge for a week or frozen for up to 3 months.