Preheat the oven to 350F. Lightly grease 4 8-inch round pans. I also recommend lining the bottom of the pan with a circle of parchment paper to keep the cake from sticking to the pan.
Blend together the eggs, vanilla, coconut oil, coconut milk, honey, and apple cider vinegar until smooth. Add in the flour and baking powder and mix together.
Divide the batter evenly between the 4 pans and bake for 25 minutes, or until a toothpick comes out clean.
While baking, blend together the sweet cream cheese ingredients. In a stand mixer, mix together the cacao buttercream ingredients on high.
Once the cakes cool, top 3 of the cakes with sweet cream cheese icing and layer them on top of each other. Cover the entire cake with cacao buttercream. To make the ombre icing, add 1 more tbsp of colorant for each layer.
To make the ears, melt dark chocolate into a large circular cutter, remove the cutter, and place in the freezer.