Preheat your oven to 350 degrees
In a medium bowl, mash the banana until smooth
Add the apple sauce and honey and mix to combine
Add the baking powder and flaxseeds and mix to combine
Add 1 1/2 cups of flour and mix until fully incorporated
Continue adding flour until you develop a dough dry enough to knead and roll out
Transfer the dough onto a floured surface
Roll the dough out to approximately 1/4 inch thick (dust with additional flour during the rolling process, if necessary)
Cut out crackers using a round cookie cutter, pastry cutter or dog bone cutter
Transfer the crackers onto a parchment lined baking sheet
Use a fork to poke holes in the top of each cracker
Whisk 1 egg in a small dish and brush the tops of each cracker lightly
Sprinkle with whole flaxseeds
Bake for 15-20 minutes or until the crackers are golden brown and crispy
Let them cool fully on a cooling rack before serving
If you ground your flaxseeds, transfer the crackers into an airtight container and store them in the refrigerator. If you left your flaxseeds whole, store them in an airtight container at room temperature