Preheat oven to 350 degrees, grease an 8 x 8 baking dish.
Combine through salt in a large bowl, set aside.
Combine eggs and stevia and whisk together until fully incorporated in a medium bowl.
Add remaining wet ingredients to the medium bowl and whisk together.
Pour wet into dry ingredients and add in chocolate chips and walnuts if using.
Pour batter into baking dish and bake for 20-25 minutes until a toothpick inserted comes out clean.
Let cool completely in pan and then cut into 9 squares, wrap individually and store in refrigerator.
Notes
-you can use all oat flour if you don't have almond flour. I just ran out of oats and had to improvise. -use any sweetener you like, it doesn't have to be stevia. Adjust measurements as necessary. *Each piece is about 145 calories with 10g of protein including the walnuts and chocolate chips.