Preheat oven to 375 degrees F, line 8 x 8 square baking dish with parchment paper and spray with cooking spray. Set aside.
In a large bowl, add bananas and mash with a fork. Then add applesauce, milk, ground flaxseed, baking powder, baking soda, cinnamon and salt. Whisk well.
Add oats, Medjool dates, walnuts and half of mini chocolate chips. Stir to combine.
Transfer mixture into prepared baking dish, level with spatula and top with remaining mini chocolate chips, lightly pressing on them. Bake for 30 minutes or until toothpick inserted in the center comes out clean and edges are golden brown.
Remove from the oven, let cool for 10 minutes in a baking dish, then holding onto parchment paper flaps transfer onto a cooling rack to cool off completely. Using serrated knife, cut into 9 square bars.
Serve hot, warm or cold on their own, with yogurt, peanut butter or whatever you like for breakfast.
Notes
Store: Refrigerate in an airtight container for up to 1 week.
Freeze: In resealable container for up 3-4 months.
You could also use a non-stick muffin tin or BPA-free silicone baking cups.
I also like to double the recipe, bake in 9" x 13" baking dish and freeze for later.