In a large bowl, add 1 stick butter, and ½ cup each brown and white sugars. Add 1 tsp vanilla and using a paddle attachment or a wooden spoon, cream together butter and sugars.
Add in 1 egg and stir briefly until chunky. Add in ½ tsp salt, ½ tsp baking soda, and 1 oz pudding powder together in a separate bowl. Add to the wet mixture then slowly add flour.
Add in both white and butterscotch chocolate chips and fold in gently until evenly distributed. You may want to reserve a few to press into the tops fresh from the oven!
Optional: refrigerate the dough for 30 minutes. This will help make light and fluffy cookies!
Bake on a parchment paper-lined baking sheet 7-9 minutes, or until light golden brown around the edges. Mine are perfect at exactly 8 minutes. Move to a cooling rack to cool. Optionally press a couple extra chocolate chips into the top to make them look pretty.