Start soaking the cashews in hot water. After at least 15 minutes, drain.
Combine almonds, coconut and dates in a food processor until small crumbles. If using the 1 cup Souper Cube silicone mold, press 1/4 of the mixture into each of the 4 sections. Alternatively, press a small amount into the bottom of each muffin liner, about 1/4" to 1/2" thick. This is your first layer.
Blend cashews (drained) with plant milk, 1/4 cup lemon juice and 1/4 cup maple syrup in a high speed blender until smooth. Reserve and refrigerate roughly 1/3 of this cheesecake mixture for later. Pour the other 2/3 of this mixture in even amounts over your first layer in the molds and place molds in the freezer for at least 1 1/2 hour to set.
While your second layer is freezing, make your berry compote...
In a saucepan over medium-high heat, stir berries with 1 TBSP lemon juice, 3 TBSP maple syrup and pinch of salt. You may want to slightly mash larger berries with the back of a fork or potato masher. Continue stirring until mixture thickens, approximately 15 minutes. Then, refrigerate to cool while first two layers continue to freeze.
When your bottom layers are finally set, begin to make the third layer (leave bottom layers in freezer until you have finished this next step). Divide the berry compote, blending 1/2 cup compote with the reserved cheesecake mixture in blender. Remove molds from freezer and pour this evenly over molds to make your third and final layer. Return molds to the freezer for another 2 hours. Reserve and refrigerate the remaining compote as a topping for serving.
Once all layers are frozen and set, remove from freezer and immediately remove from silicone mold. Let thaw about 10 minutes before cutting rectangle in half and serving. Optionally, top with a drizzle of reserved berry compote, some fresh berries, coconut flakes, chopped nuts, etc.