Preheat your oven to 350 degrees. Line a 9x13 pan with tin foil and lightly spray with non-stick spray. Set aside.

Cream together 1/2 cup of butter with the sugar. Add the eggs, syrup, vanilla, flour, and salt. Pour into your prepared pan and bake for 30 minutes or until a toothpick comes out clean. Cool to room temperature.

Mix together the powdered sugar, 1/2 cup of melted butter, water, mint extract, and green food coloring if using. Spread over your brownies. It will look like a thin layer but I promise this is all you’ll need. Place in the refrigerator and allow to set.