Start with lining a square or rectangular dish with plastic wrap or parchment paper. My dish was 12 x 16 cm / 5 x 6 inches.
Mash or mix the raspberries, chia seeds, and sweetener of choice until more or less smooth. Let thicken for at least 20 minutes.
In a food processor, process the dates, shredded coconut, salt, and vanilla until dough consistency. Take out and transfer about two thirds of the dough to the prepped dish and press and flatten using your hands.
Add the rolled oats to the remaining dough and process until just combined.
Transfer the raspberry jam, spread out, and top with the crumbly topping. Slice up and enjoy! Store in an airtight container in the fridge.