In a food processor, blend 1 ½ cups of dates and cashew butter until a smooth dough forms. Press into the bottom of the prepared pan to form the nougat layer.
Sprinkle the roasted peanuts evenly over the nougat layer and gently press them in.
Process the remaining 1 cup of dates with the plant milk until smooth and caramel-like. Spread over the peanuts.
Melt the dark chocolate chips and coconut oil together (double boiler or microwave). Pour over the caramel layer and spread evenly.
Refrigerate or freeze for at least 30 minutes to firm up.
Once set, remove from the pan using the parchment paper and cut into 12 bars.
Notes
You can substitute peanut butter or other nut butters in the nougat layer. Store in the fridge or freezer to keep firm.