Prep your pan: Line a baking sheet or large cutting board with parchment paper. Clear a flat spot in your fridge or freezer.
Melt the chocolate: In a microwave-safe bowl, combine chocolate and coconut oil. Microwave in 20–30 second bursts, stirring between each, until smooth and glossy.
Alternatively, melt over a double boiler.
Stir in protein powder: Sprinkle protein powder over the melted chocolate and whisk gently. Start with 1/3 cup. If it thickens too much, add a teaspoon of warm water or a splash of milk at a time until smooth.
The mixture should flow but not run.
Add nut butter and flavor: If using, whisk in nut butter and vanilla. Taste and adjust sweetness if needed. Avoid over-sweetening; the toppings will add flavor.
Spread the base: Pour the mixture onto the parchment and spread into an even layer, about 1/8 to 1/4 inch thick.
Thinner bark is crispier; thicker bark is fudgier.
Add toppings: Sprinkle nuts, seeds, coconut, and fruit evenly over the surface. Press lightly with the back of a spatula so toppings adhere.
Finish with salt: Add a light pinch of flaky sea salt. It sharpens the chocolate and balances sweetness.
Chill to set: Transfer to the fridge for 30–45 minutes or the freezer for 15–20 minutes, until firm.
Break into pieces: Lift the bark by the parchment and snap into chunks.
Aim for palm-sized pieces for easy portions.
Store properly: Keep in an airtight container in the fridge or freezer. See storage tips below.