Step 1:Place margarine , peanut butter ,sugars and eggs in mixing bowl and beat all together until thoroughly combined.
Step 2:Add flour, baking powder ,bicarbonate of soda and salt, stirring in with a fork to form soft dough.
Step 3:Roll dough into small balls the size of small walnuts. and place well apart on greased baking sheets.
Step 4:Use a fork to press down and form a criss-cross pattern on each cookie.Sprinkle on tops with granulated sugar.
Step 5:Bake until risen and lightly brown.
Step 6:Cool on wire rack.