Preheat the oven to 350° F, andgrease a 9x9" glass baking dish.
In a small bowl, mix together the flax meal and water, set aside while preparing the remaining ingredients.
Mix the oats, baking powder, cinnamon and salt together.
In another bowl, mix the maple syrup, apple sauce, lemon juice and almond butter. Then add in your flax mix, and mix until combined.
Pour the wet into the dry and mix thoroughly.
Add in your frozen blueberries and chocolate chips, stir to combine.
Scoop the mix into your prepared pan, and make sure to spread it out evening. Scatter the sliced almonds (optional) over the top and bake for 35 minutes.
Let fully cool before slicing.