Preheat the oven to 425 degrees Fahrenheit.
Line your muffin tin with liners and set aside. In a large mixing bowl mash the bananas. Measure out 1 1/2 cups. This is usually somewhere between 3-4 bananas, but it depends on the size.
Whisk in the eggs, almond butter, maple syrup and vanilla.
Whisk in all remaining dry ingredients.
Fold in the chocolate chips or chopped nuts if using.
Add the batter to your prepared muffin tin. Usually, I recommend filling muffins about 3/4 of the way up, but with these I recommend filling them pretty close to the top.
Add to the oven for 2 minutes. After 2 minutes, lower the temperature to 350 and cook for an additional 18-22 minutes.
Remove from the oven and let cool on a cooling rack. Enjoy!