01 - Line a baking sheet or 8x8-inch pan with parchment paper.
02 - In a bowl, combine chopped dates, chopped walnuts, and toasted shredded coconut. Spread the mixture evenly on the prepared pan and press lightly to create a uniform base.
03 - In a heatproof bowl, melt the dark chocolate and coconut oil together using a microwave (in 20-second bursts, stirring in between) or a double boiler until smooth.
04 - Pour the melted chocolate evenly over the date-walnut-coconut base, spreading with a spatula to cover completely.
05 - Sprinkle the top with remaining walnut pieces, toasted coconut flakes, and a pinch of flaky sea salt if desired.
06 - Refrigerate for at least 30 minutes, or until chocolate is set.
07 - Once firm, break or cut into 12 pieces. Store in an airtight container in the fridge for up to 1 week.