Great recipe! Kids love it! Just make sure you get them out of the oven in time.
1 cup flour
1 tsp baking powder
Pinch of salt
1/2 cup peanut butter
1 tbsp soft butter
1 cup brown sugar (rietsuiker met lepel stroop)
1 large egg
1/2 cup milk
1 cup chopped dark chocolate
Mix all dry ingredients (except the chocolate) together.
Mix butter, peanut butter and sugar until creamy. Add egg and milk, whisk until smooth. Add the flour mixture and after that the chocolate.
Bake at 175c/350f for 15-18 min.