Chocolate mayonnaise cake

1. Calories per serving: 287, number of servings: 12, fat grams per serving: 17, approx cook time: 0:45.
2. 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.
3. generously grease a baking pan, then dust with cocoa.
4. Bakei at 350