Rich chocolate brownie recipe with a creamy mint layer

Ingredients

• 1 cup sugar
• 1/2 cup butter, softened
• 1 cup flour
• 4 eggs, beaten
• 1/2 tsp. salt
• 16oz. chocolate syrup (a little more than 1 1/2 cups)
• 2 cups powdered sugar
• 3 Tbs. creme de menthe liqueure
• 6 ounces dark chocolate chips
• 6 Tbs. butter