St. Patrick's Day Cookies

Ingredients (14)

• 2/3 cup (11 tablespoons) unsalted butter, softened
• 3/4 cup granulated sugar
• 1/2 teaspoon grated orange zest
• 1/2 teaspoon pure vanilla extract
• 1 large egg
• 4 teaspoons milk
• 2 cups all-purpose flour, sifted
• 1 1/2 teaspoons baking powder
• 1/4 teaspoon salt
• 16 regular marshmallows
• 24 ounces vanilla frosting, or homemade buttercream
• Green food coloring
• 4 small Tootsie Rolls
• 16 green or yellow M&M's candies