Place pitted dates, coconut oil and boiling water in a food processor and pulse until almost smooth. It’s OK if it’s still a little bit chunky. Add the sesame seed paste and mix again. Add the rolled oats and process until they are ground up. The mixture will not be completely smooth, but it should look like a very thick paste that you can squeeze in your hand and it will hold its shape.
Press the mixture evenly into the lined pan and refrigerate for 20 minutes.
Place chopped chocolate in a bowl with coconut oil and melt in the microwave on 50% power in 30 second intervals until completely smooth. Stir in between intervals. Spread it evenly over the chilled oat bars.
Dollop some peanut butter on top and swirl it in, then top with sea salt before the chocolate sets. Refrigerate for 1 hour until set before slicing and store refrigerated.