INGREDIENTS
4
Egg yolks, large
2
Eggs, large
1/4 cup
Corn syrup, light
3 cups
All-purpose flour
1 1/2 tsp
Baking powder
1 tsp
Baking soda
1/3 cup
Brown sugar, packed light
14 oz
Chocolate, semisweet
1 1/2 cups
Granulated sugar
2 1/2 tsp
Kosher salt
2 3/4 cups
Powdered sugar
2 1/2 tsp
Vanilla
1/2
Vanilla bean
1/3 cup
Vegetable oil
1
Vegetable oil spray, Nonstick
1 1/2 cups
Butter, unsalted
1 cup
Buttermilk
2 cups
Sour cream