Preheat the oven to 350 degrees Fahrenheit.
Line a baking sheet with parchment paper.
If using applesauce, add it to a large mixing bowl with the almond butter and sugar. Beat well with an electric mixer until combined.
If using flax seed, add to mixing bowl and let sit for 5 minutes to thicken and then add the almond butter and sugar. Mix well with electric mixer.
Add the oats, baking soda, and salt. Mix again until incorporated.
Add chocolate chips. Run mixer for a second or two to mix chips into dough.
Use a teaspoon to scoop out dough and shape into a ball with your hands. (If using flax, the dough will look a little crumbly but should easily squeeze together into a ball .) Place on baking sheet. (Leave extra space between cookies if using applesauce.)
Bake for 10-12 minutes until golden brown.
Allow cookies to cool on baking sheet for ~5 minutes before transferring to cooling rack with a spatula to cool completely.