Preheat your oven to 170 C°, if you have the fan option that's the best way to go. For conventional (gas) ovens use the same temperature but we need to be cautious as it might take less time to bake.
In one bowl whisk together the oil, orange juice, sugar, ground cinnamon, ground cloves, and ground nutmeg until the sugar has dissolved.
In a second bowl mix flour, baking powder, baking soda, salt.
Pour the liquid mixture on top of the flour mixture, mix by hand until everything is well incorporated and the dough has absorbed the liquid.
Mold your cookies by pressing 2 teaspoons of the mixture into the palm of your hand, gently roll the cookie into a ball. Try not to over pat them in your hand as we need a porous surface to absorb the honey syrup later.
Sprinkle on your finely chopped walnuts.
Bake in your preheated oven for 17-20 minutes. Make sure you do not over-bake. Use the color on the bottom of the cookies as your indicator, it should be a golden brown.