In bowl, cover dates with warm water and soak for 10 minutes. Drain off water, set dates aside.
In work bowl of food processor, add almonds, cashews, rolled oats, cocoa powder, espresso powder, cinnamon, and salt. Pulse until ingredients are combined and fairly well ground up.
Add drained dates and honey to nut mixture. Process until incorporated and starting to pull away from sides of bowl.
Use a tablespoon to measure out slightly rounded 1-tablespoon portions of the mixture. Roll together between clean hands to form a tightly packed ball. Repeat with remining mixture.
May be stored on the counter for a couple days, in the fridge for a couple weeks or in freezer for up to six months.