INGREDIENTS
2 sticks
unsalted butter, room temperature
1/3 cup
canola oil
1 tsp
salt
2 1/2 cups
granulated sugar
5
whole eggs, room temperature
2
eggs yolks, room temperature
3 cups
cake flour
2 tsp
baking powder
1 cup
sour cream, room temperature
1 tbsp
clear vanilla extract
1 tsp
butter extract
2 cups
unsalted butter, room temperature
5
cups powdered sugar, measured and then sifted
1 tbsp
pure vanilla extract
salt
10 oz
good quality semi-sweet or dark chocolate, chopped, melted and cooled
1/4 cup
heavy whipping cream