How to Make Chocolate Mayonnaise Cake
- Combine dry ingredients in a large mixing bowl, tossing lightly with a spoon to mix.
- Combine the mayonnaise, coffee, and vanilla in a smaller bowl; add to the dry ingredients, beating with the mixer on medium for three minutes.
- Generously grease a baking pan, then dust with cocoa.
- Bake at 350 degrees -- For a layer cake, bake 20 minutes; for a sheet cake, bake 25 minutes; for a bundt cake, bake 45 minutes.