Line a 9 inch square pan with parchment or wax paper. Set aside.
Combine almonds and cashews in the food processor and turn on until they are roughly chopped.
Add in dates and process until combined. The mixture won't be smooth.
Add in the egg white powder, pumpkin spice, salt, and pumpkin and process until mixture comes together. This may take 3-4 minutes. Stop and scrap down sides as needed.
Press mixture into pan as evenly as possible.
Refrigerate for a couple hours, then cut into 9 bars (3x3).
Store covered in the fridge for best texture.