Preheat oven to 180ºC (350ºF). Brush a 9" x 13" baking pan generously with butter. If desired, line the bottom and long sides of the pan with baking paper for easier removal of the base.
Beat the butter and chocolate peanut spread with an electric whisk until smooth. Add eggs, sugar and vanilla extract, and continue beating until fluffy.
In a separate bowl, combine flour, baking powder and salt. Add flour mixture to butter mixture. Blend only until combined.
Pour the mixture to the prepared baking pan and spread evenly. Bake for 30-35 minutes or until done (skewer comes out clean when inserted into the center). Remove from the oven and leave to cool.
Remove from the pan then cut into squares. Serve, share and enjoy!
Note: If theres no available chocolate peanut spread, we can use 3/4 cup peanut butter and 75 grams of cocoa powder.
