Line an 8 x 8-inch baking dish with parchment paper and set aside.
In a large mixing bowl bowl, combine the flour, protein powder, sugar, and cinnamon and mix well.
In a microwave safe bowl, combine the almond butter and brown rice syrup and heat until melted. Add the vanilla extract and pour the wet mixture into the dry and mix well- It should be crumbly.
Using a spoon, add milk one spoonful at a time until a thick, firm batter is formed. Add more if neeed.
Transfer the protein bar mixture to the lined baking dish and press firmly. Rub the cinnamon bun topping on it and refrigerate for at least 30 minutes.
Notes
TO STORE: Store these cinnamon protein bars in an airtight container in the fridge for up to 7 days. You may want to wrap the bars with parchment paper to prevent them from sticking to each other. TO FREEZE: You can also freeze cinnamon protein bars for 2 to 3 months. When you are ready to eat them, remove the bars from the freezer and allow them to thaw and soften. Variations