Add the pitted dates to a food processor and blend until they begin to break down into a sticky mixture

Pour in warm water gradually while blending until a smooth, thick paste forms with no visible chunks

Add the granola and peanut butter to the processor and pulse until the mixture looks evenly combined and slightly crumbly yet sticky

Transfer the mixture into the prepared pan and press it firmly into an even layer, smoothing the top with the back of a spoon

Place the pan in the refrigerator and chill until the mixture becomes firm and holds its shape when pressed

Lift the slab out using the parchment paper and slice into evenly sized bars with a sharp knife