On the stovetop fill a saucepan with water and bring it to a low simmer.
Add the peanut butter, coconut oil and maple syrup to a heat safe bowl.
Place the bowl over the simmering water. Whisk continuously until everything is melted.
Take off the heat and mix in the milk, vanilla and a pinch of salt, and then fold in the oats and cocoa.
Place the dark chocolate chips into a heat safe bowl and place over the simmering water, stirring until the chocolate has melted. Then remove from the heat.
Using an ice cream scoop or a tablespoon, scoop out the mixture and drop on a baking sheet lined with baking paper. Shape into round cookies, drizzle with chocolate over top, and refrigerate until set.