01 - Combine vanilla ice cream, whole milk, peppermint extract, vanilla extract, and green food coloring in a blender. Blend until smooth and creamy, scraping down the sides as needed.
02 - Taste the milkshake and adjust peppermint extract or food coloring intensity to your preference.
03 - In a separate chilled bowl, whip the heavy cream with powdered sugar and vanilla extract using an electric mixer or whisk until soft peaks form.
04 - Pour the milkshake evenly into two tall glasses.
05 - Crown each glass generously with the whipped cream topping.
06 - Garnish with green sprinkles and a maraschino cherry if desired. Serve immediately with straws.