Chocolate Covered Chocolate Mint Cookies

I'm rating this 5 stars with a HUGE caveat---don't use the amount of mint oil in the recipe--but do make these cookies because they are FABULOUS. My peppermint oil (an essential oil) came in a jar that lets a drop out at a time and, even at that rate, the entire area was scented by the oil. I put just over an eighth of a teaspoon into my dough and it was perfect. Any more would have been too much. The 1 1/2 teaspoons in the recipe would have yielded inedible cookies. This aside, gosh, these are good!! Every bit as good as your best memory of Girl Scout thin mint (if not better). As I wanted heart-shaped cookies today, I rolled my dough out and used a cookie cutter and a lot of TLC. I used half the dough for a yield of two dozen 2 " hearts.