Microwave butter for 45 seconds (it will be partially melted).
½ cup butter
Cream together butter and brown sugar on medium speed until mixture gets light and fluffy, about 2 minutes.
¾ cup brown sugar
Reduce mixer speed to low. Add egg and mix until fully incorporated, about 1 minute. (Tip: Crack egg into a glass or separate small bowl in case you get shell fragments. Much easier to get them out from there than the cookie dough!)
1 egg
Mix in vanilla.
1½ tsp vanilla
Mix in baking soda.
¾ tsp baking soda
Add flour a half cup at a time and mix until all flour is incorporated.
1¼ cup all purpose flour
Mix in chocolate chips.
½ package semi-sweet chocolate chips
Using a spoon or cookie scoop, form dough into balls and place onto cookie sheets.
Bake for about 10 minutes until cookies begin to get brown.
Transfer cookies to a wire cooling rack to cool.
Notes
Recipe yield will vary (e.g., 16-24 cookies) depending on the size of the cookies.