Prepare the dates – Slice each date in half lengthwise and remove the pit. Gently flatten each half, focusing on the center to create space for filling.
Fill – Spread a thin layer of peanut butter inside each date half (up to ½ teaspoon). Place one hazelnut in the center.
Shape & chill – Fold the date closed like a taco and press lightly so it holds. Place on a lined tray or plate and move to the freezer while you prep the chocolate.
Melt the chocolate – Add chocolate to a microwave-safe bowl. Heat in 30-second pulses until mostly melted. Add peanut butter and tahini/almond butter, heat briefly, and stir until smooth.
Add crunch – Fold in puffed quinoa gradually until evenly combined.
Coat – Dip each stuffed date into the chocolate mixture, let excess drip off, and place back on the tray.
Set – Freeze for 10 minutes, then refrigerate for about 1 hour until firm. Finish with flaky salt.