01 - Preheat oven to 350°F. Line a 12-cup muffin tin with paper liners or lightly grease with oil or butter.
02 - In a large bowl, mash the bananas thoroughly. Whisk in eggs, honey or maple syrup, milk, vanilla, and melted coconut oil until smooth and well combined.
03 - In a separate bowl, mix together oats, baking powder, cinnamon, and salt until evenly distributed.
04 - Pour dry ingredients into the wet mixture and stir until just combined. Gently fold in any optional add-ins if using.
05 - Divide batter evenly among prepared muffin cups, filling each about three-quarters full.
06 - Bake for 22 to 25 minutes, or until centers are set and tops are lightly golden brown.
07 - Let cool in pan for 5 minutes, then transfer to wire rack. Serve warm or at room temperature topped with Greek yogurt and optional garnishes.