Preheat oven 350°F. Line a 12-count cupcake tin with cupcake liners. Set aside. Place mixing bowl and beaters into the freezer while you bake the cake, so it will be nice and cold when you go to make the whipped cream frosting.
In a separate large bowl, mix the cake mix, yogurt, oil, buttermilk, and eggs together until well combined. Be careful to not overmix.
15.25 ounces lemon cake mix, 6 ounces lemon yogurt, 2 tablespoons olive oil, ⅔ cup buttermilk, 3 large eggs
Fill the cupcake liners ⅔ full and bake for 11-17 minutes, or until a toothpick comes out clean.
Remove cupcakes from the oven and let sit for about 2 minutes in the cupcake tin. Remove from the tin and cool completely on a wire rack.
Once cupcakes are completely cooled, make up the frosting, and frost the cupcakes. If you are not going to eat them right away, I would wait to frost them and place both the cupcakes and the frosting in the refrigerator.