1: Preheat your oven to 350°F (175°C).
2: In a bowl, mash the bananas until smooth.
3: Mix in ground oats, old-fashioned oats, baking powder, baking soda, and cinnamon powder.
4: Add the eggs, honey, Greek yogurt, and melted butter to the mixture and stir until combined.
5: Pour the mixture into a greased baking dish and spread evenly.
6: Bake for about 25 minutes or until golden brown on top.
7: Allow to cool slightly before cutting into squares and serving.
