INGREDIENTS
3/4 cup
butter (softened)
1/2 cup
sugar
1
egg
2 tbsp
water
1
box French vanilla cake mix
whipped cream (for garnish)
4
egg yolks (at room temperature)
Zest of 2 lemons
1/3 cup
fresh lemon juice
1/2 cup
sugar
salt
3 tbsp
unsalted butter (softened)