Step 1: Preheat the Oven. Start by preheating your oven to 350°F (175°C). This ensures that your cookies bake evenly and achieve that perfect golden brown color.
Step 2: Combine the Dry Ingredients. In a large mixing bowl, whisk together the all-purpose flour, bread flour, quick oats, baking powder, baking soda, and salt.
Step 3: Cream the Butter and Sugars. In another bowl, cream the cold butter with the brown sugar and granulated sugar until light and fluffy.
Step 4: Add the Eggs and Vanilla. Beat in the eggs one at a time, then mix in the vanilla extract.
Step 5: Combine Wet and Dry Ingredients. Gradually add the dry ingredient mixture to the butter mixture, stirring until just combined.
Step 6: Fold in the Chips and Butterfinger Bits. Gently fold in the chocolate chips, butterscotch chips, and Butterfinger Bits.
Step 7: Scoop and Bake. Using a cookie scoop, drop rounded tablespoons of dough onto prepared baking sheets, spacing them about 2 inches apart. Bake for 10-12 minutes.
Step 8: Cool and Enjoy. Let the cookies cool on the baking sheets for 5 minutes before transferring them to a cooling rack.