Ingredients
Equipment
Method
- Step 1: Preheat your oven to 350°F (175°C).
- Step 2: Line your 8x8-inch baking pan with parchment paper, allowing some overhang on the sides.
- Step 3: In a mixing bowl, combine the creamy peanut butter, powdered sugar, softened butter, and vanilla extract. Mix until smooth.
- Step 4: Spread the peanut butter mixture evenly into the prepared baking pan.
- Step 5: In a microwave-safe bowl, combine the semi-sweet chocolate chips with 1 tablespoon of vegetable oil. Microwave in 30-second intervals, stirring after each, until melted.
- Step 6: Repeat the melting process for the white chocolate chips with the remaining tablespoon of vegetable oil.
- Step 7: Drizzle the semi-sweet chocolate over the peanut butter layer, followed by the white chocolate.
- Step 8: Using a knife or toothpick, swirl the two chocolate layers together to create a marbled effect.
- Step 9: Bake the bars in the preheated oven for 20-25 minutes.
- Step 10: Allow to cool completely on a wire rack, then lift out and cut into squares.
Notes
Store the bars in an airtight container at room temperature for up to a week or in the fridge for longer freshness. You can also freeze them for up to three months.
