The decadent marriage between moist chocolate and creamy mayonnaise creates the velvety chocolate mayonnaise Cake, a delicacy that's sure to delight any special occasion.
Adjust oven rack to middle position and heat oven to 350 degrees. Grease 8-inch square baking pan.
Whisk flour, sugar, and baking soda together in large bowl. In separate bowl, whisk cocoa and water together until smooth. Whisk in mayonnaise and vanila. Stir mayonnaise mixture into flour until combined.
Transfer batter to prepared pan and smooth top with rubber spatula. Bake until toothpick comes out with few crumbs attached, about 1 hour, rotating pan halfway through baking.
Let cake cool in pan on wire rack, 1 to 2 hours. Serve. (Cake can be stored at room temperature for up to 3 days.)
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Recipe excerpted from The Modern Pantry: 350+ Ways To Cook Well With What's On Hand by America's Test Kitchen, copyright 2022 and reprinted with permission.