Begin by gathering all ingredients and equipment. Line your springform pan with parchment paper to ensure easy removal later.
Place almonds in your food processor and pulse until they reach a coarse, meal-like consistency – about 15-20 pulses. Add the pitted dates, sea salt, and cinnamon, then continue processing until the mixture sticks together when pressed between your fingers.
Press the mixture firmly and evenly into the bottom of your prepared springform pan. Use the back of a measuring cup to compact it well. Place the crust in the freezer for 15 minutes to set while you prepare the filling.
Core and thinly slice two of the apples. In a bowl, toss these slices with 1 tablespoon of lemon juice to prevent browning. Set aside.
Core and roughly chop the remaining two apples, then place them in the food processor. Add the remaining lemon juice, maple syrup, vanilla extract, cinnamon, nutmeg, cloves, and chia seeds. Pulse until you achieve a chunky applesauce consistency.
Gently fold the sliced apples into the apple puree mixture. Remove the crust from the freezer and carefully spread the apple filling over it, creating an even layer.
In a small bowl, mix together the chopped walnuts, coconut flakes, maple syrup, and cinnamon until well combined.
Sprinkle the topping mixture evenly over the apple filling. Cover the pan with plastic wrap and refrigerate for at least 2 hours, or preferably overnight.
To serve, carefully remove the sides of the springform pan and transfer the cake to a serving plate. For clean slices, use a sharp knife dipped in hot water and wiped clean between each cut.