Add the dates and hot water to a food processor or high-powered blender and blend until a smooth paste or ball forms. Add the peanut butter, toasted peanuts, rolled oats, and cocoa powder.
Pulse until combined - there should be small bits of peanuts and oats remaining, but not too big. Be careful not to over-process so it doesn’t get too sticky or greasy.
Roll into balls, about 1-inch across each. You can also press the dough into a small pan and cut into bars if you prefer.
Store in a sealed bag or small lidded container in the fridge for up to 2 weeks, or in the freezer for longer term storage.