INGREDIENTS
6 tbsp
(84g), unsalted butter, room temperature (I use Challenge Butter)
3/4 cup
sugar
6 tbsp
sour cream, room temperature
2 tsp
vanilla extract
3
large egg whites, room temperature
1 1/4 cups
all purpose flour
2 tsp
baking powder
1/4 tsp
salt
6 tbsp
milk, room temperature
2 tbsp
water, room temperature
2
egg yolks
6 tbsp
sugar
1 1/2 tbsp
cornstarch
1 cup
+ 2 tbsp (270ml) milk
1 tbsp
salted butter
1 tsp
vanilla extract
12 oz
semi sweet chocolate chips
2 tbsp
light corn syrup
3/4 cup
+ 2 tbsp (210ml) heavy whipping cream