To make the raspberry layer, add the raspberries, maple syrup and chia seeds to a large mixing bowl. Mash with a fork until the raspberries break up and the mixture becomes smooth. It should only take a couple of minutes if your raspberries are soft.
Let the raspberry mixture sit in the fridge for about 30 minutes to thicken.
While the raspberry layer is chilling, make the crust layer. Add the cashews, dates, and salt to a food processor. Pulse until the dates and cashews break up and become a consistent doughy mixture. You should be able to squeeze it with your fingers and it stick together.
Add the crust mixture to the bottom of an 8-9 inch springform pan lined with parchment paper. Press down with your fingers to flatten and make an even layer all the way to the edges.
Pour the raspberry mixture over the crust and spread it out with a spatula or spoon. Place the tart in the freezer for at least 30 minutes (preferably an hour) before you serve.
To make the whipped cream, combine the coconut cream (it is important that you use only the cream, not the whole can of milk and water), vanilla, and maple syrup in a large mixing bowl. Use a hand mixer to beat the cream until it starts to thicken up and form stiff peaks. This should take 2-3 minutes.
To serve, remove the tart from the springform pan and cut it into 8 even slices. Top with a dollop of whipped cream and serve!