Preheat oven to 350. In the bowl of a stand mixer, cream butter and sugar. Add eggs and vanilla and beat well. In a separate bowl, stir together dry ingredients. Gradually blend into butter mixture. Stir in baking chips. Using a cookie scoop, drop onto baking sheet lined with parchment or a silpat. Bake 8-9 minutes. Cookies will be very soft, and will solidfy when cooled. Do not overbake.
Adapted from food.com