1. Combine the flour, oats, baking soda, salt, and cinnamon in a medium bowl.
2. Using an electric mixer, cream the sugar and peanut butter together. Mix in the egg and vanilla. Mix in the mashed bananas. Add the flour mixture and mix until combined. Stir in the diced apples, cranberries, and chocolate chips.
3. Form the dough into balls, about 3 tablespoons each, and flatten into the shape of a cookie onto a baking sheets lined with parchment paper. Bake at 350 degrees F for 10-13 minutes until slightly browned.