Mash the banana in a bowl and add all the remaining ingredients into the bowl (except the fillings), mix well.
Take one part and roll the dough into a small round about ⅛ inch thick (you can use a round cookie cutter or a jar lid to cut out the shape).
Place ½ to ⅔ tsp of desired filling in the center of each circle.
To shape into a triangle, lift up the right and left sides, leaving a top flap, and bring both sides to meet at the center above the filling (pictured).
Bring the top flap down to the center to meet the two sides and pinch the edges together.
Place on a cookie sheet with parchment paper about 1 inch apart and bake at 350 F for about 20 minutes.