Preheat oven to 350 and line an 8x8 pan with parchment paper.
Add banana and avocado in a food processor and blend until smooth.
Add in cashew butter and blend.
Add in maple syrup, dark cocoa powder and baking soda, blend.
Add batter to a large bowl and stir in chocolate chips
Add batter to pan and bake for 20 minutes or until done.
Let cool and add glaze, if desired.
For glaze, combine all ingredients in a small bowl and mix well, add to brownies.
Enjoy :)
** For fodmap friendly, limit serving to 1/8 of recipe and use almond butter