Preheat the oven to 180°C (350°F) and grease a 9" or 20cm round pie dish.
Beat the super soft or partially melted butter, brown sugar and sugar together.
Beat in the eggs one at a time.
Add the vanilla extract and golden syrup and beat in.
Mix in the flour, baking powder and salt.
Stir in the chocolate chips and M&Ms
Spread the cookie dough in an even layer as the the base in the prepared dish.
Place in the oven to bake for 20-25 minutes. The middle will still wobble but the outside will be starting to turn golden.
Allow it to cool completely before slicing or dig in with a spoon!
Video
Notes
* Omit if you don't have golden syrup or replace with maple syrup.If you want a gooier cookie pie, add half a tin of condense milk to the middle to ensure it stays gooey!