Combine the almond flour, chopped macadamia nuts, shredded coconut, powdered allulose, and salt. Stir in the melted butter until the mixture holds together when pressed.
Press the crust into a 9-inch springform pan or pie dish. Chill for 20 minutes so it firms up.
Beat the cream cheese and powdered allulose until smooth, then mix in the coconut cream, vanilla extract, and coconut extract.
Whip the cold heavy cream to firm peaks in a separate bowl. Fold it into the coconut cream cheese mixture until the filling is thick and silky.
Spoon the filling over the crust and smooth the top. Chill for 4 hours, or until set.
Drizzle the keto caramel sauce over the cheesecake, then scatter the toasted macadamia nuts and coconut flakes on top.
Refrigerate for 30 minutes more before slicing so the topping settles into the cheesecake.