In a food processor, grind oats. flour, coconut and brown sugar until a coarse mixture is formed. Transfer it to a bowl and add small pieces of cold butter or you can even grate the cold butter. Add salt and baking powder and using hands mix until the mixture resembles a coarse granola with clumps. Now slowly add milk starting with 2 tbsp and mixing gently until it forma a stiff dough. I ended up using 3.5 tbsp milk but it will depend on where you live.
Now lay a parchment paper on your work surface and place the dough ball on top. Cover with another parchment paper and roll it to ¼" thickness.
Cut circular shaps using cookie cutter. Gather the leftover dough after cutting shapes and repeat. Transfer to a lined baking sheet using a flat spatula so cookies don't break.
Bake for 10-11 minutes or until edges start to get golden.
Cool on baking sheet for 5-10 mins and then cool on cooling rack.
If doing chocolate version, melt chocolate. Bring water to a boil in a pot. Place a glass bowl on top making sure that the bottom of glass bowl is not touching boiling water. Place chocolate chips in glass bowl and melt.