This espresso crumb coffee cake lives up to its name, as it puts the coffee into coffee cake by way of espresso powder in the ...

Mix the flour, cocoa, baking soda, salt and the sugar. Poke three holes into the mix. Pour the vanilla, vinegar, and oil into each hole. Add the coffee and stir the ingredients until well blended.

Add brown sugar, eggs, milk, cream, cornstarch, vanilla, and salt. Process until very smooth. DO AHEAD Filling can be made 1 day ahead. Transfer to large bowl, cover, and chill.