In a large sauce pan cook butter, brown sugar, and water over medium low heat until melted.
Add chocolate chips and stir until partially melted.
Remove from heat and stir until chocolate is melted.
Pour into large bowl and let stand 10 minutes to cool slightly.
Beat in eggs one at a time with mixer.
In a separate bowl combine flour, baking soda, and salt.
Mix dry ingredients into chocolate mixture just until incorporated.
Chill dough about 1 hour.
Preheat oven to 350º.
Roll teaspoon of dough into balls and place on parchment-lined cookie sheet.
Bake 12-13 minutes. Cookies will crisp as they cool.
Remove from oven and immediately place mint on each hot cookie.
Allow mint to soften, then swirl mint over cookie.