Chocolate Cake with Chocolate Buttercream Frosting – Eat More Chocolate Eat More Chocolate

Ingredients

• 1 1/2 cups granulated sugar
• 1/2 cup packed light-brown sugar
• 3/4 cup unsweetened cocoa powder
• 1 tsp baking soda
• 3/4 tsp salt
• 1 cup boiling water
• 3/4 cup canola oil
• 2 large eggs
• 3 large egg yolks
• 1 Tbsp vanilla extract
• 2 cups all-purpose flour
• 1/3 cup milk
• 1/3 cup sour cream
• 1 1/2 cups butter, at room temperature (I like to use 1 cup unsalted and 1/2 cup salted)
• 3 3/4 cups + 2 Tbsp powdered sugar
• 1/2 cup + 2 Tbsp cocoa powder
• 3 - 4 Tbsp heavy cream
• 1 tsp vanilla extract