01 - Line a rimmed baking sheet with parchment paper, ensuring the entire surface is covered.
02 - Peel the bananas and cut them into ΒΌ-inch thick rounds. Arrange the slices in a single, slightly overlapping layer on the prepared baking sheet, forming a rough rectangular shape.
03 - Place the chopped chocolate in a microwave-safe bowl and heat in 20-second intervals, stirring thoroughly between each burst, until the chocolate is completely smooth and glossy.
04 - Pour the melted chocolate evenly over the arranged banana slices. Use a spatula to spread the chocolate gently, ensuring every slice is fully covered.
05 - Drizzle the peanut butter over the warm chocolate, if using. Sprinkle the chopped roasted nuts, mini chocolate chips or cacao nibs, and a pinch of flaky sea salt evenly across the surface.
06 - Place the baking sheet in the freezer for at least 45 to 60 minutes, or until the chocolate is completely firm and hardened throughout.
07 - Remove from the freezer and break or cut the bark into irregular pieces. Serve immediately while still cold for the best snap and texture.