• 1 stick butter, room temperature
• 1 cup brown sugar
• 4 eggs, lightly beaten
• 1 teaspoon vanilla
• 1/4 cup buttermilk
• 1 1/2 cups cocoa
• 2/3 cup flour
• 1/4 teaspoon baking soda
• 1 cup peanut butter
• Peanut butter chips
• Ice cream for serving
Preheat the oven to 350 degrees. In a medium bowl stir together the butter, brown sugar, eggs, and vanilla. Stir in buttermilk.
In another bowl, gently whisk the cocoa, flour, and baking soda. Fold the flour mixture into the butter mixture.
Spoon half of the butter into the skillet and spread it out evenly. Top with the peanut butter and spread evenly. Then pour the remaining batter, spreading it in an even layer.
Bake for 25 to 30 minutes until cooked through. Sprinkle peanut butter chips over the top. Serve with ice cream.