Decadent chocolate brownies with a gooey peanut butter swirl, perfect for any peanut butter lover!

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1. Prep & Preheat:
Preheat oven to 350°F (175°C). Line a 9×9-inch baking pan with parchment paper and lightly grease it.
2. Make the Brownie Batter:
2. In a large bowl, whisk melted butter, granulated sugar, and brown sugar until smooth.
3. Add eggs and vanilla extract, whisking until fully combined.
4. In another bowl, mix flour, cocoa powder, salt, and baking powder.
5. Gradually fold the dry ingredients into the wet mixture until just combined.
3. Make the Peanut Butter Swirl:
6. In a separate bowl, mix peanut butter, powdered sugar, melted butter, and vanilla until smooth.
4. Assemble & Bake:
7. Pour the brownie batter into the prepared pan, spreading evenly.
8. Drop spoonfuls of peanut butter mixture over the batter. Use a knife to swirl it into the brownies.
9. Bake for 30-35 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.
10. Let cool before slicing. Enjoy!

For extra peanut butter flavor, add peanut butter chips to the batter.
For a fudgier texture, slightly underbake the brownies and let them cool completely before cutting.
Store leftovers in an airtight container at room temperature for up to 4 days.