To begin, preheat your oven to 350 and spray two pans with non-stick spray.
To a large mixing bowl, add your butter, white sugar, brown sugar and instant coffee granules. Blend with a mixer till creamy.
Add your vanilla and egg and blend till smooth.
To the same bowl, add your flour, cornstarch, baking soda and salt. Stir together till you have a thick, smooth cookie dough.
Add your heath bits and chocolate chips and fold into the cookie dough.
Using a medium cookie scoop, scoop your dough evenly spaced apart onto your pans.
Bake in the oven for 9-11 minutes, or till the edges are crisp and the center looks a touch underdone.
Let cool, then devour!
Stored in an airtight container, these cookies taste best within 4-5 days.