Peanut Butter Stuffed Brownies

1. Preheat the Oven:

1. Preheat your oven to 350°F (175°C).

2. Grease a 9x9-inch baking pan or line it with parchment paper, leaving an overhang on the sides for easy removal.

2. Prepare the Brownie Batter:

1. In a large mixing bowl, whisk together the melted butter, granulated sugar, and brown sugar until smooth.

2. Add the eggs, one at a time, whisking well after each addition.

3. Stir in the vanilla extract.

4. In a separate bowl, sift together the flour, cocoa powder, salt, and baking powder.

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

3. Make the Peanut Butter Filling: