Preheat oven to 325F (163C).
Line a 7" or 8" square (or similarly sized) pan with parchment paper.
Begin to prepare the top and bottom layers by mixing Neufchâtel cheese with egg whites and toffee stevia until combined.
Add vegan protein powder, and mix well.
Spoon half of the mixture into the pan, and set aside.
Prepare cheesecake filling by mixing all the filling ingredients on low speed (or by hand) until smooth and creamy.
Spoon cheesecake filling over the bottom layer. Smooth out with your spoon.
Spoon the remaining top/bottom layer over the cheesecake layer. Set aside.
In a small bowl, mix the cinnamon and stevia for the topping.
Sprinkle over the top layer.
Bake at 325F (163C) for about 20 minutes, or until firm. (Try not to overcook, as the cheesecake layer will get more spongey and less creamy.)
Let cool completely (at room temperature, then refrigerate).
Cut into bars, and enjoy!