For the pancakes with curd filling, stir flour, possibly a little salt and half the amount of milk until smooth (either with a whisk or mixer). Then add the remaining milk and the eggs and let rest briefly.
Add butter/oil to the pan, heat and spread the batter over the pan. Turn the pancakes once and bake until golden brown.
For the curd filling, mix curd with a little sour cream and powdered sugar so that the filling is nice and smooth. Spread it on the pancakes, roll them up, arrange them on plates and serve the pancakes with curd filling.