Add in the flax egg and beat on low until fully combined.
Slowly mix in the flour mixture on low, beating just until a sticky cookie dough forms.
Fold in the chocolate chips, then chill the mixture in the fridge for 10 minutes.
Scoop a heaping tablespoon of the cookie dough onto a cookie sheet, about 2 inches apart. You should get 12 cookies.
Bake in the preheated oven for 11-12 minutes or until cookies are set in the center and beginning to brown around the edges. They will be very soft but don’t over-bake to maintain a chewy texture.
Remove from oven and allow to cool on the baking sheet for about 30 minutes to cool completely.