Step 1: Baking the Cupcakes
- Preheat the oven to 350°F and line muffin pans with cupcake liners.
- In a large bowl, whisk together flour, cornstarch, baking powder, baking soda, and salt.
- Using a stand or hand mixer, beat butter on high speed for 1 minute until creamy. Add sugar and beat for another 2 minutes.
- Mix in egg whites, vanilla, and almond extract, then fold in sour cream.
- Add the dry ingredients and mix on low speed. Gradually pour in milk while mixing until just combined.
- Fill cupcake liners about ⅔ full and bake for 19-22 minutes, or until a toothpick comes out clean.
- Let them cool completely before frosting.
Step 2: Whipping Up the Frosting
- Beat butter for 2-3 minutes until light and fluffy.
- Add half of the powdered sugar, mix well, then add the remaining sugar and beat again.
- Pour in heavy cream, vanilla, coconut extract (if using), and a pinch of salt, beating until smooth.
- Mix in blue food coloring until you achieve a soft robin’s egg shade.
- Transfer frosting to a piping bag and swirl onto cooled cupcakes.
Step 3: Decorating with a Speckled Touch
- Arrange three Cadbury mini eggs on top of each frosted cupcake.
- In a small bowl, whisk together cocoa powder and vanilla extract to create “speckle paint.”
- Dip a stiff pastry brush (or a new paintbrush) into the cocoa mixture and flick speckles onto each cupcake for a natural egg effect.