Instructions

1. Sift sugar, cocoa powder, baking soda, baking powder, and salt into the bowl of a stand mixer.
2. In a separate bowl beat together vegetable oil, eggs, and Greek yogurt until combined and slowly add into your dry ingredients with the mixer on low.
3. Beat until combined, scraping down the sides of the bowl. Add flour and mix on low speed until completely incorporated.
4. Divide batter evenly between 4 shallow 6 inch cake pans* and bake at 325 degrees for 15-18 minutes or until a toothpick inserted in the center comes out clean.
5. Allow to cool in the pan for 5 minutes before turning out onto a cooling rack to cool completely.
6. While your cakes are cooling make the frosting by beating the butter on a medium speed until pale and fluffy.
7. Add in the powdered sugar one cup at a time mixing after each addition. Add in vanilla and mix well.
8. Evenly distribute 1/2 cup of frosting into two bowls, coloring one pink and one blue.

To Assemble:

1. Lay the first layer of your cake on your cake stand and frost in an even layer.
2. Using a round 3" cookie cutter cut out a hole in the 2nd and 3rd layers of cake.
3. Top the first layer of cake with one of your rings of cake and frost the top of the ring but not inside it, add the second ring and repeat, frosting the top but not the inside.
4. Cut off a thin layer of one of the scraps of cake and lay it in the bottom of the hole to cover up the frosting. This will keep your candies from sticking to the frosting!
5. Add your candies to the hole leaving just enough room to add another thin layer of cake on top of the candy. Frost and add the 4th layer.
6. Crumb coat, chill, and frost your cake with the remaining white frosting.
7. To create marble effect pipe pink and blue frosting onto the sides and top of your cake in lines then gently smooth with your spatula. Be careful not to smooth too much, you don't want to over blend the colors.