<b> For the Chocolate Cadbury Cupcakes </b>
Preheat the oven to 350°F. Line a cupcake tin with paper liners.
In a large bowl, combine oil, brown sugar, white sugar, eggs, and vanilla.
Pour in buttermilk.
Stir in cocoa powder, baking soda, baking powder, and salt. Add in flour a little a time until just combined. Do not over mix.
Fill cupcake liners ~2/3 of the way full. Press a frozen Cadbury egg into the middle of each cupcake. Use a knife to cover the hole you made.
Bake for 18-20 minutes or until a toothpick inserted in the center comes out clean.
<br> For the Buttercream Frosting </b>
Cream butter until light and fluffy. Stir in vanilla and salt.
Gradually add powdered sugar a little at a time. Add milk as needed until you reach your desired consistency.
Dye ~1 Cup of the buttercream frosting yellow.
Spread or pipe white frosting. Top with yellow frosting. Top with a mini Cadbury Egg.