Line a shallow slice tin with baking paper and set aside.
Blend all ingredients except the boiling water, in a food processor until well combined and the mixture starts to crumb. Make sure the dates are finely chopped.
Slowly add the boiling water until the mixture clumps together; you may need a little bit more than the 2 tablespoons, I find I do sometimes as I'm not overly precise with my measurements.
Pour the mixture into the slice tin and allow to harden in the freezer for 3-4 hours.
Remove from the freezer and cut into bars. Store in an airtight container in the freezer.