Chocolate Batter –

3 sticks unsalted butter at room temperature
3 cups granulated sugar
5 large eggs at room temperature
2 cups flour
1 ¼ cup dutch processed cocoa
1 tbsp ground cinnamon
1 tsp salt
½ tsp baking powder
½ tsp baking soda
1 cup buttermilk
¼ cup water
1 tsp vanilla

Cocoa Spice Topping –

¼ cup granulated sugar
¾ tsp cinnamon
½ tsp dutch processed cocoa
Pinch of ground ginger
Pinch of ground cloves
¼ cup sparkle sugar (for decorating)