Ingredients
For the batter:
1 1/4 cups milk
2 tablespoons sour cream
4 tablespoons (1/2 stick) unsalted butter, melted
1 teaspoon pure vanilla extract
4 extra-large eggs
1 1/3 cups all-purpose flour
2 tablespoons sugar
1 tablespoon baking powder
For the filling:
3 cups (24 ounces) ricotta cheese
8 ounces mascarpone cheese
2 extra-large eggs
1/3 cup sugar
1 tablespoon grated lemon zest (2 lemons)
2 tablespoons freshly squeezed lemon juice
1/2 teaspoon pure vanilla extract
1 teaspoon kosher salt
Fresh Blueberry Sauce
Fresh Blueberry Sauce:
3/4 cup freshly squeezed orange juice (3 oranges)
2/3 cup sugar
1 tablespoon cornstarch
4 half-pints fresh blueberries
1 teaspoon grated lemon zest
1 tablespoon freshly squeezed lemon juice