Preheat the oven to 180C/Gas4; line 2 baking trays with baking paper
Put the peanut butter, sugar and egg in a bowl and beat until smooth; stir in the oats, baking powder and chocolate chips until well combined
Shape the mixture in your hands into ping-pong sized balls and space out on the baking trays, flattening them slightly with your fingertips; press in any loose chocolate chips that fall off
Bake for 15 minutes until golden brown; allow to cool for completely in the tray
12 servings