Ingredients:
- 3/4 cup (170g) unsalted butter, melted and hot
- 1 cup (200g) granulated sugar
- 1/2 cup (100g) light brown sugar, packed
- 2 large eggs, room temperature
- 1 tbsp (13g) vanilla extract
- 3/4 cup (75g) Dutch-processed unsweetened cocoa powder
- 3/4 cup (95g) all-purpose flour
- 1/2 tsp (3g) sea salt
- 1 cup (170g) semi-sweet chocolate chips
- 1/2 cup (125g) creamy peanut butter
- 2 tbsp (15g) confectioners' sugar
- 1 tbsp (15g) melted butter
Instructions:
- Preheat your oven to 350°F (180°C).
- In a large bowl, whisk together the 3/4 cup hot melted butter, granulated sugar, and light brown sugar.
- Stir in the 3/4 cup cocoa powder while the butter is still warm until the mixture looks glossy and smooth.
- Add the 2 eggs and vanilla extract to the chocolate mixture. Whisk vigorously for about 2 minutes until the batter lightens in color and looks velvety.
- Gently fold in the 3/4 cup all purpose flour and sea salt using a spatula. Stop mixing as soon as the last streak of flour disappears to ensure the brownies don't become tough.
- Fold in the 1 cup semi sweet chocolate chips.
- In a small bowl, stir together the 1/2 cup creamy peanut butter, 2 tbsp confectioners' sugar, and 1 tbsp melted butter. This mixture should be thick but pourable so it stays on top of the batter.
- Pour the brownie batter into your prepared 8x8 pan and smooth the top.
- Drop dollops of the peanut butter mixture onto the surface.
- Use a butter knife to swirl the peanut butter into the chocolate until you see beautiful marble patterns.
- Bake for 30 minutes. The edges should be set, but the center should still have a very slight jiggle.
- Let the brownies cool completely in the pan for at least 1 hour. Slice into 16 squares once fully set.