Prep your pan and oven: Heat oven to 350°F (175°C). Line a 12-cup muffin tin with paper liners or lightly grease it.
Mash the bananas: In a large bowl, mash the bananas with a fork until mostly smooth, with a few small lumps for texture.
Whisk in wet ingredients: Add honey or maple syrup, oil, yogurt, eggs, and vanilla.
Whisk until well combined and creamy.
Combine dry ingredients: Sprinkle the flour, baking powder, baking soda, cinnamon, and salt over the wet mixture. Gently fold with a spatula until just combined. Avoid overmixing.
Stir in add-ins: If using mini chocolate chips, berries, or nuts, fold them in now.
Keep the batter thick but scoopable.
Fill the pan: Divide batter evenly among the muffin cups, filling each about 3/4 full for nicely domed muffins.
Bake: Bake 16–20 minutes, until the tops are set and a toothpick inserted in the center comes out clean or with a few moist crumbs.
Cool: Let muffins rest in the pan for 5 minutes, then move to a wire rack to cool completely. This helps them stay fluffy and prevents sogginess.
Serve: Enjoy warm or at room temperature. Add a smear of nut butter for extra staying power.