Created by Engrossed on March 30, 2012
Step 1: Preheat oven to 350°F Lightly grease 2 baking sheets.
Step 2: Beat the butter, oil sugars, vanilla, salt and instant coffee in a large bowl until smooth.
Step 3: Beat in the vinegar, egg, baking soda and baking powder until well combined.
Step 4: Stir in the flours until well combined.
Step 5: Stir in the chocolate chips, toffee bits and pecans, if desired. *The dough will appear oily.
Step 6: Scoop out 1 inch balls and place on baking sheets. They don't need to be spaced far apart because they don't spread much. *I tried flattening some but didn't like them as much.
Step 7: Bake 14-16 minutes, reversing trays half way through, until golden brown all over with no hint of softness in the center.
Step 8: Remove from oven and allow cookies to cool 5 minutes on baking sheets before transferring to racks or paper bags to cool completely.