- one 20-ounce box brownie mix
- 2 eggs
- 1/4 cup water
- 1/2 cup cooking oil
- 30 chocolate thin mints
- Preheat the oven to 350 degrees, if using a glass baking dish (if using a nonstick pan, 325 degrees).
- Using a handheld mixer or whisk, blend the first 4 ingredients in a large bowl. Be sure to break up all clumps of brownie mix.
- Transfer the mixture to a glass baking dish or nonstick pan. Baking time will depend on pan size. For a 9-by-13-inch pan, bake for 27-30 minutes; for a 9-inch-square pan, bake for 34-37 minutes; for an 8-inch-square pan, bake for 42-45 minutes.
- With 5-7 minutes left, remove the pan from the oven, and top the brownies with chocolate thin mints. (For a stronger and more distinct flavor, use mints covered in dark chocolate. York mints are generally too thick, but will work if you are in a pinch.)
- Place the pan back in the oven and let the mints melt for the remaining 5-7 minutes. Remove the brownies from the oven, and using a spatula, spread the melted mints. Let the brownies set and the mint topping harden. Enjoy this easy dessert with a cold glass of milk!