In a food processor, pulse together all the crumb base ingredients for a minute until it comes together nicely. Set aside a 1/4 of this to top off the bars. Use the rest for the base of the bars. Line an 8x8 deep baking pan with parchment paper. Add the crumb base and spread out evenly in the pan.
In the same processor, add the filling ingredients and pulse until it comes together like a paste. Spread this entirely on top of the base evenly.
With the extra crumb, top off the filling. Spread out the crumb and press gently into the filling to cover the top.
Cover with aluminum or platic wrap and chill in the fridge for 2 hours.
Cut into 16 squares after being chilled and enjoy.
Store the remainder in an airtight container lined with wax paper to prevent sticking to one another and keep in the fridge for your go to snack!