Preheat oven at 325F. Grease a baking sheet with butter.
Combine flour, powdered milk, bread flour, dark brown sugar, sugar, salt, and baking soda in a large bowl and stir with a spoon.
Soften the butter in the microwave for just 10 seconds. The butter should be softened enough to be mixed easily into the dough.
Add the butter into the dry ingredients. Add egg, vanilla, molasses, and mix with a hand mixer until well combined. Finally, add the chocolate chips. Mix with a spoon to combine them well.
With the help of a cookie scoop, form your cookies. Chill for1 hour in the refrigerator.
Bake for 14 to 16 minutes. Take them out and let the cookies rest for 10 minutes on the baking sheet.
Enjoy your chocolate chip cookies once they cooled down.