Preheat the oven to 170 degrees and line a baking tray with baking paper

 Add the almond meal, cassava flour, collagen and baking powder to a large bowl and mix 

Melt the butter, tahini and honey or maple syrup in a saucepan over a low heat, mixing regularly

Crack the egg into the dry ingredients and whisk

 Pour the melted butter, tahini and your choice of sweetener over the dry ingredients. Mix constantly while pouring to ensure the egg doesn't cook. Mix well to incorporate. Add the sultanas here if using 

Pour the sesame seeds onto a small plate. Begin rolling the mixture into balls and coating them in the sesame seeds before flattening them into the shape of cookies onto the baking tray 

Bake for 12 minutes, until slightly golden on top