Preheat your oven to 375 degrees Fahrenheit.
Combine vanilla, egg, butter, and both sugars in a large bowl.
Once those are combined, add in whole wheat flour, baking soda, and salt. This makes a stiff dough.
Add in chocolate chips, stirring until everything is combined.
Use a spoon or your hands to pull out small, round balls of cookie dough from the bowl and drop onto an ungreased cookie sheet, leaving about two inches between each one. Make sure to give the cookies enough space in order to spread out fully. You don’t want to stifle their spread.
Bake the cookies for about nine minutes. When done, they should be light brown and have soft centers. You can remove them immediately from the cookie sheet and place onto a wire rack to cool.