Deep Dark Chocolate Cake

This deep dark chocolate cake is a one-bowl wonder that gets its intense color and flavor from a generous ¾ cup of cocoa powder bloomed with boiling water. No melting chocolate on the stove, no fussy techniques. Just stir, beat, pour, and bake.

The boiling water is the key ingredient most people overlook. It dissolves the cocoa powder completely and unlocks its full flavor potential. The batter will look alarmingly thin after you stir it in, but that’s exactly right. That extra liquid creates an incredibly moist cake with a tender, almost pudding-like crumb.

Oil instead of butter keeps the cake soft even after chilling. Butter-based cakes firm up in the fridge, but oil-based cakes stay moist and tender at any temperature.

The chocolate buttercream frosting is straightforward: softened butter beaten with powdered sugar, cocoa, milk, and vanilla until spreadable. Add the milk gradually since you may need a splash more or less depending on the cocoa brand.

Pro Tips

• Sift the cocoa powder with the dry ingredients to prevent clumps in the batter
• Use Dutch-process cocoa for a darker color and smoother flavor, or natural cocoa for a more intense chocolate punch
• Don’t open the oven for the first 25 minutes or the cake may sink in the center
• Cool the layers completely before frosting or the buttercream will melt and slide

Variations

• Add a tablespoon of instant espresso powder to the boiling water to deepen the chocolate flavor
• Use hot brewed coffee instead of boiling water for a mocha cake
• Bake in a 13×9 pan for a single-layer sheet cake that’s easier to transport