Triple Layer Chocolate Mint Cookies with Ganache - My Home Made Recipe

Ingredients

• 1/2 cup (113 g) unsalted butter, softened
• 1 cup (200 g) granulated sugar
• 1 large egg, room temperature
• 1 teaspoon vanilla extract
• 1 1/4 cups (160 g) all-purpose flour
• 1/3 cup (30 g) unsweetened cocoa powder
• 1/2 teaspoon baking soda
• 1/4 teaspoon fine salt
• 1 1/2 cups (180 g) powdered sugar, sifted
• 1 tablespoon milk or heavy cream
• 1/2 teaspoon peppermint extract, plus more to taste
• 2-3 drops green food coloring, optional
• 6 oz (170 g) semisweet chocolate, finely chopped
• 1/3 cup (80 ml) heavy cream
• 1 teaspoon unsalted butter