Mash the bananas in a bowl, then beat in the brown sugar and honey until all the sugar is dissolved.
Add in the applesauce, vanilla, and egg. Mix together.
In a separate bowl, mix together the flour, cocoa powder, baking soda and salt. Add the dry ingredients to the wet ingredients and mix until completely combined.
Fold in ½ cup of the chocolate chips. Pour batter into a greased 8x8-inch baking dish. Sprinkle the top with remaining chocolate chips.
Bake for 25 to 35 minutes. Check the center with a toothpick to determine if the cake is done.
Recipe by Tone and Tighten at https://tone-and-tighten.com/healthier-chocolate-banana-cake.html