Preheat oven to 375 degrees. Lightly spray muffin tin with non-stick spray OR line muffin tin with paper muffin wrappers.

In a large bowl, mix the flour, baking soda, baking powder, and salt together. Set aside.

In a separate bowl, beat the bananas, sugar, egg, and melted butter together until smooth. Add the banana mixture to the flour mixture. Stir to combine only until batter is well combined and moist. Gently stir in chocolate chips. Be careful not to over-mix. Spoon the batter into prepared muffin cups. Fill slightly over 1/2 full.

Finely crush the graham crackers in a plastic zip-loc bag. I use a rolling pin to do this. Sprinkle the tops of the muffins with the crumbs. Add a few more chocolate chips to the top of the muffins, and slightly press them down into the batter.

Bake at 375 degrees for approximately 30-35 minutes (oven temps vary). You will know they are done when a toothpick inserted into middle of muffin comes out dry. Remove muffins to a wire rack to cool.

Mix up the glaze while the muffins are cooling. Stir well. If mixture is too thick, add additional drops of lemon juice (or water) to thin it out. You want the glaze to not be runny, but thick enough to drizzle. If you get it too thin, just add additional powdered sugar. Once the muffins have cooled off, drizzle the glaze over the tops of the muffins. Let them sit for a few more minutes so the glaze can firm up, then serve. Enjoy!