Line a chopping board with baking paper.
Open out dates and lay in a square on lined chopping board. With a piece of baking paper and the bottom of a glass, press the dates until they are flat and mostly no baking paper is showing between them.
Spread the peanut butter over the dates into a thin, even layer so it is covering all of the dates. Tip: microwave peanut butter for 30 seconds and give it a good stir if it a bit thick and hard to spread.
In a microwave safe bowl, add the chocolate and coconut oil and microwave for about 2 minutes, in 30 seconds increments. Once fully melted, spread chocolate over the peanut butter into a thin, even layer.
Sprinkle over peanuts and flaky sea salt.
Refrigerate for at least 1 hour before cutting into 10 pieces.