Preheat the over to 180 degrees Celsius (355 degrees Fahrenheit)

Put the oats, flour, cinnamon, baking powder and salt into a large bowl and mix everything together

Put the peanut butter, maple syrup, oat milk and vanilla essence into another bowl and mix everything together well. 

Combine the wet ingredients with the dry ingredients and mix together until the cookie mixture is consistent throughout and there is no more dry porridge/flour remaining

Roll the cookie mixture into small bowls. Using a tablespoon or an ice cream scoop can be useful to take the same amount of mixture each time and ensure cookies of of a similar size. 

Lay some parchment paper on an oven tray

Place the cookies on the parchment paper and flatten into cookie shapes with a flat object such as the bottom or a cup, leaving approximately 2cm (3/4 inch) between each cookie

Bake the cookies in the over for around 12 minutes or until cookies start to brown on the outside. 

Remove cookies from the oven and allow to cool for a few minutes before devouring