Set your oven to 350°F (175°C) and line a standard cupcake pan with paper liners.
In a large bowl, combine white cake mix, egg whites, water, oil, mint extract, and green food coloring. Beat on medium speed for 2 minutes until smooth and evenly colored.
Spoon the batter into cupcake liners, filling each about 2/3 full.
Bake for 18–20 minutes, or until a toothpick comes out clean. Let them cool in the pan for 5 minutes, then transfer to a wire rack.
In a chilled bowl, whip heavy cream and instant vanilla pudding mix on high for 3–4 minutes until stiff peaks form.
Once cooled, top cupcakes with the whipped frosting. Add green sprinkles and a maraschino cherry.