Chocolate Espresso Mint Bars

Ingredients

• 3 (1 ounce) unsweetened chocolate squares
• 34 cup butter
• 3 eggs, beaten
• 34 cup all-purpose flour
• 12 teaspoon salt
• 1 12 cups granulated sugar
• 1 12 teaspoons vanilla extract
• 1 -2 teaspoon espresso powder (up to 1 Tbsp)
• 12 cup walnuts (optional) or 12 cup pecans, chopped (optional)
• 3 tablespoons butter
• 1 12 teaspoons cream, add more to make easier to spread if needed
• 1 12 cups powdered sugar
• 1 12 teaspoons peppermint extract
• 3 drops green food coloring
• 2 tablespoons butter
• 2 (1 ounce) unsweetened chocolate squares