Soak Ingredients:
If the Medjool dates are firm, soak them in lukewarm water until softened. In a separate bowl, soak the cashews and walnuts together for about 10 minutes, then drain.
Prepare the Pan:
Line a standard loaf pan with parchment paper if desired.
Blend the Mixture:
Add chopped dates, cashews, and walnuts to a food processor and pulse until broken down. Add almond flour, honey, peanut butter, chia seed powder, melted coconut oil, vanilla extract, cinnamon, and protein powder if using. Process until a thick cookie dough-like consistency forms.
Press Into Pan:
Transfer the mixture to the prepared pan and firmly press into an even layer using your hands or the back of a spoon.
Melt Chocolate:
Melt the dark chocolate chips and coconut oil together using a double boiler or microwave in 30-second intervals, stirring between each interval until smooth.
Top the Bars:
Pour melted chocolate over the protein bar mixture and spread evenly. Sprinkle flaky sea salt on top if desired.
Freeze:
Freeze for about 2 hours, or until firm.
Slice and Serve:
Remove from the freezer and cut into bars or squares. Store bars in the freezer for best texture and freshness.