Preheat oven to 180°C bake. Line 2-3 large baking sheets with baking paper.
Cream the Tararua Butter, peanut butter and sugars together until light and fluffy. Beat in the egg.
Add Edmonds Standard Grade Flour, Edmonds Baking Powder and salt. Mix well. Stir in the chocolate chips.
Roll heaped tablespoons of cookie dough into balls and place on prepared trays, leaving enough room for the cookies to spread. Flatten with a fork. Bake for 12-14 minutes, or until golden brown.
Leave to cool on trays for 5 minutes before transferring to a wire cooling rack. Sprinkle with a little sea salt, if desired.