Heat oven to 350 degrees. Line cupcake tins with cupcake liners or spray with non-stick cooking spray.
Pour the cake mix into a large bowl and add egg whites, vegetable oil and peach soda. Mix with a hand or stand mixer on medium speed until well incorporated.
1 box white cake mix, 4 egg whites, 1/2 cup vegetable oil, 1 1/2 cups peach soda
Add half of the Jello and mix well.
1/2 box Peach Jello
Pour cupcake batter into the prepared muffin tin. Each one should be about 2/3 full.
Bake in the 350 degree oven for 18-20 minutes, until the cakes are light golden brown on top, and a toothpick inserted into the center comes out clean. Place the cupcake pans on a wire rack and allow to cool completely before frosting.
To make the frosting, place butter in a medium bowl and use your mixer to cream the butter. Beat until light and fluffy (about 2 minutes).
1 cup salted butter
Mix in the vanilla and remaining Jello mix.
1 teaspoon vanilla extract, 1/2 box Peach Jello
Slowly add the powdered sugar, 1 cup at a time, while adding 1 tablespoon of the half and half in between each cup of sugar. Continue mixing for 1-2 minutes or until the frosting is creamy and forms stiff peaks.
3 1/2 cups powdered sugar, 3 tablespoons half & half or whole milk
If using food coloring (optional), add it now. Start with 1-2 drops and mix well, then continue until you achieve the desired color.
Orange food coloring
Fill the pastry bag with frosting and frost cupcakes. (The star tip works very well for this step.) Add sprinkles and enjoy!
Orange or peach sprinkles