Preheat the oven to 350°F (180°C). Line two large baking sheets with parchment paper. Slightly oil the paper with cooking oil spray.
In a large mixing bowl, stir the coconut condensed milk, peanut butter, flour, baking soda, baking powder, vanilla extract, and sugar if added.
Stir until a smooth cookie dough forms - it will be sticky, that's normal.
Fold in the chocolate chips and stir to incorporate.
Scoop 1 ½ tablespoons of batter and drop on the baking sheet, leaving 2 inches of space between each cookie.
Bake on the center rack of the oven at 350°F (180°C), one pan at a time, for 11-12 minutes. Keep the other pan at room temperature while the first one is baking.
Let the cookies cool down for 5 minutes on the pan at room temperature, then transfer to a cooling rack for 30 minutes.
Sprinkle salt on top of the cookies, if you like, before serving.
