Mayan Chocolate Cupcakes with Cocoa-Cinnamon Buttercream

Bahan-bahan (24 porsi)

• 1 (18.25 oz.) box Devil’s Food (or other chocolate variety) cake mix
• 1 cup buttermilk
• 1/2 cup vegetable or canola oil
• 1 tsp . cinnamon
• 1/2 tsp . chili powder
• 1/4 tsp . cayenne
• 4 eggs
• 1 stick (1/2 cup) butter, room temperature
• 1/2 cup unsweetened cocoa powder (I prefer dark chocolate cocoa, but any works!)
• 1/4 cup milk
• 1 tsp . cinnamon
• 2 1/2 cups powdered sugar (more or less to achieve desired consistency)