"Serve these cute cakes with a sweet and tangy lemon curd...."
all-purpose flour, spooned and leveled
baking soda
kosher salt
(2 sticks) unsalted butter, at room temperature
sugar, divided
large eggs, at room temperature
sour cream, at room temperature
grated Meyer lemon zest, plus 2 tablespoons juice
(6-ounce) package blueberries