Preheat oven to 350°F.\n\n1. Mix butter and sugar in stand mixer until it is creamy and all mixed together. (Creaming)\n2. Add eggs, one-at-a-time. Mix one egg in **before** mixing in the next egg. Then add vanilla.\n3. Mix flour and salt in a separate bowl. Add gradually to cream while mixing.\n4. Add half of the walnuts and butterscotch chips.\n5. Grease 9x13 pan and add batter. Use spoon to press remaining walnuts and butterscotch chips into the batter.\n\nBake for 25 minutes.