Preheat your oven to 350ºF and line a muffin tin with liners.
In a bowl, whisk together the flour, baking soda, and salt. Set aside.
In a large bowl, use an electric mixer to cream together the butter, brown sugar, and vanilla until fluffy. Add the eggs and mix to combine. Stir in the mashed bananas, maple syrup, Greek yogurt, and almond milk until well combined.
Slowly add the dry ingredients to the wet ingredients, mixing until just combined.
Fill each muffin well about 3/4 full.
Bake at 350ºF for 23-25 minutes, or until a toothpick inserted into the center comes out clean.
Allow the muffins to cool for at least 10 minutes before enjoying.
Notes
Ensure the bananas are mashed and measured before adding to the batter, as the size of bananas may vary.