I adopted this from the Recipezaar account. They are more a cakey brownie when right out of the oven but get more fudgy after cooling. They have a nice light mint flavor. If you can't find the mint chocolate chips you can recreate with regular semi-sweet chips and a few drops of peppermint oil (as that is what makes the mint chips minty).
- Preheat oven to 325° F and grease a 13x9-inch baking pan.
- In a small bowl, combine flour, baking soda, and salt; set aside.
- In medium saucepan, combine sugar, butter and water; bring JUST TO A BOIL then remove from heat.
- Add mint-chocolate chips and vanilla extract; stir until chips are melted and mixture is smooth.
- Transfer to a large bowl and let cool slightly (so you don't cook the eggs).
- Add eggs, one at a time, beating well after each addition.
- Stir in flour mixture gently (be sure not to overmix).
- Stir in nuts, if using.
- Spread into prepared pan.
- Bake for 28-32 minutes.
- Cool completely in pan on a wire rack.