Prepare muffin tin with liners (I find foil ones work best).
Peel and core the apples. Grate.
Put the grated apples in a paper towel lined sieve or colander (I used 3 paper towels), or use a clean dish towel. Gently squeeze the liquid out of the grated apples (does not have to be squeezed super dry).
In a large bowl, combine almond butter, eggs, mashed bananas, honey, cocoa powder, vanilla, and baking soda and mix until well combined.
Stir in the grated apple.
Stir in the chocolate chips.
Scoop into lined muffin tin, filling each cup about full.
Top with additional chocolate chips, if desired.
Bake for 25-30 minutes, until toothpick inserted in the muffins comes out clean.
Notes
I use Guittard Extra Dark chocolate chips, which happen to not contain any dairy solids. So if you are avoiding dairy, these are a good chocolate chips to use. Otherwise, feel free to use your favorite!
Don't worry if the apple starts to brown. The muffins are dark chocolatey brown anyway, so it doesn't matter!
You can omit the honey if you find that the muffins are sweet enough from the other ingredients.
Top the muffins with pecans if you don't want to use as many chocolate chips...or leave the muffins plain on top!