Recipe summary
Preparation time:
Cooking time:
Yield:
1
Ingredients
Cake
-
1/2
cup
unsalted butter, room temperature
-
1 1/2
cups
granulated sugar
-
1/2
cup
brown sugar
-
2
egg
-
2
teaspoons
vanilla extract
-
1/2
cup
water
-
4
ounces
unsweetened chocolate, chopped
-
2
teaspoons
espresso powder
-
1 3/4
cups
pastry flour
-
1/4
cup
cocoa powder
-
1
teaspoon
baking soda
-
1/4
teaspoon
salt
-
1
cup
sour cream
Frosting
-
2
cups
unsalted butter, room temperature
-
1
egg yolk, optional
-
12
ounces
bittersweet or semisweet chocolate, chopped, melted and cooled to room temperature
-
2
teaspoons
vanilla extract
-
1/4
teaspoon
salt
-
2 1/2
cups
icing sugar, sifted
To Assemble