Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking pan.

In a large mixing bowl, cream the softened butter, brown sugar, and granulated sugar together until light and fluffy (about 2-3 minutes).

Beat in the eggs, one at a time, along with the vanilla extract, ensuring everything is well incorporated.

In another bowl, whisk together the flour, cocoa powder, and salt.

Gradually add the dry ingredients to the wet mixture, stirring until just combined. Be careful not to overmix.

Transfer the brownie batter into the prepared baking pan and spread it evenly using a spatula.

In a separate bowl, beat together the peanut butter and powdered sugar until smooth and creamy.

Scoop spoonfuls of the peanut butter mixture over the brownie batter, spreading it gently to leave some brownie visible around the edges.

Place the baking pan in the oven and bake for approximately 25-30 minutes, or until a toothpick inserted comes out mostly clean.

As soon as the brownies come out of the oven, sprinkle the chocolate chips on top and let them sit for a minute or two until they’re melty, then spread the melted chocolate evenly over the peanut butter layer.

Allow the brownies to cool completely in the pan before cutting them into squares. Enjoy!