Instructions

  1. Preheat oven to 325° F and grease a 13x9-inch baking pan.
  2. In a small bowl, combine flour, baking soda, and salt; set aside.
  3. In medium saucepan, combine sugar, butter and water; bring JUST TO A BOIL then remove from heat.
  4. Add mint-chocolate chips and vanilla extract; stir until chips are melted and mixture is smooth.
  5. Transfer to a large bowl and let cool slightly (so you don't cook the eggs).
  6. Add eggs, one at a time, beating well after each addition.
  7. Stir in flour mixture gently (be sure not to overmix).
  8. Stir in nuts, if using.
  9. Spread into prepared pan.
  10. Bake for 28-32 minutes.
  11. Cool completely in pan on a wire rack.