To the bowl of a food processor add the cashews and dates. Process until a thick paste forms, about 2-3 minutes. Add the coconut oil, coconut milk (or almond milk), vanilla and salt. Process until completely smooth and no chunks remain, scrapping down the sides of the bowl once or twice. I let my processor go a full 5 minutes to really allow the mixture to become a super smooth and thick paste.
Meanwhile, add the oats, quinoa and ground walnuts (or almonds) to a large mixing bowl.
Once the cashew mixture is ready (it should be pretty warm and gooey from the food processor running) scoop/pour it into the bowl with the oats. Mix until everything is evenly combined. It will seem thick at first, but just keep mixing and it will all come together. Allow the mixture to cool off a bit (maybe 5 minutes) and then stir in the chocolate chocolate chunks. Press the cookies into the prepared dish. Melt 2 ounces of dark chocolate in the microwave and drizzle it over the bars. Sprinkle with sea salt and place in the fridge for at least 1 hour or until cold. Cut in to bars and keep cold or leave at room temp. Personally, I think these are best kept in the fridge.
Adapted from [Mom's Oatmeal Cookie Recipe | https://www.halfbakedharvest.com/healthy-dark-chocolate-chunk-oatmeal-cookie-bars-idiot-proof/]