Cream the butter and sugar for 2 minutes, with medium speed. Then add in eggs, vanilla extra and lemon juice. Use low speed to beat it for 30 seconds, then turn to medium speed to beat it for 2 minutes.

Then sift in flour, baking soda, salt and cinnamon powder, beat for 45 seconds with low speeds.

Then add in walnut (Bake in preheated oven at 160C, bake for 10 minutes, then chop into small pieces), oatmeal and chocolate chips, mix well.

Take out a dough, about 45g (I used 75g), roll into balls, then flatten it a little bit. Place on lined baking sheet, with 5cm space in between. Pop in preheated oven at 150C, bake for 20-23 minutes or till the edge of the cookie is golden brown and soft in the middle. Let it rest on wire rack for one hour. Done!

*This recipe can make 26 cookies , I only make half of the amount, the beating time can cut into half

*You can freeze the dough, and bake it directly in the oven