01 -
In a medium bowl, whisk together flour, baking powder, and salt until evenly mixed. Set aside to prevent clumping and promote tenderness.
02 -
Beat softened butter and granulated sugar on medium speed until pale and fluffy, about 3 to 4 minutes. Scrape the bowl sides for even mixing.
03 -
Incorporate egg whites one at a time, beating well after each addition. Then add Greek yogurt, milk, and vanilla extract, mixing on low speed until just combined.
04 -
Gradually mix in green gel food coloring until achieving a vibrant watermelon rind shade. Use sparingly to maintain desired color.
05 -
Add dry ingredient mixture to wet ingredients in two portions, mixing on low speed until just incorporated. Avoid overmixing to keep cupcakes fluffy.
06 -
Preheat oven to 350°F. Line a muffin tin with cupcake liners and fill each 2/3 full with batter. Bake for 16 to 19 minutes or until a toothpick comes out clean. Cool completely before frosting.
07 -
Beat room-temperature butter until smooth and creamy, approximately 2 to 3 minutes. Gradually add powdered sugar and continue beating until thick and fluffy.
08 -
Mix in watermelon Kool-Aid powder, then add pink gel food coloring until desired watermelon pink is achieved. Adjust consistency with milk if necessary.
09 -
Once cupcakes have cooled, pipe or spread the frosting evenly atop each cupcake. Optionally, garnish with mini chocolate chips to mimic watermelon seeds.