Preheat your oven to 350°F and lightly grease a 8x8 square pan.
In a small bowl make your flax egg. Combine 1 tbsp. of flax meal with 2.5 tbsp. water stir together and set aside for five minutes to gel up.
In a medium sized bowl add the flour, baking powder, cinnamon (just the cinnamon for your bars not the topping), salt and cream of tarter. Stir until incorporated together.
Once your flax egg has set for five minutes add your maple syrup, vanilla extract and coconut oil to the bowl with your flax egg and mix until well incorporated.
Now add the wet ingredients to your dry and fold the mixture together. Mix until incorporated but only until incorporated. You do not want to over mix your batter.
Add your batter to your pan and spread evenly. The batter will be very thick. I used my hands to press it evenly into the pan.
Into a small bowl add your cinnamon and sugar for your topping and stir until well incorporated together. Sprinkle this mixture evenly on top of your bars.
Place into the oven and bake for 18-20 minutes until a toothpick comes out clean and the top forms a crispy crust.
Once the bars have cooled cut them into 9 even squares.
Enjoy!