I finally made these, daunting as they maybe, Kremsnite, or “Napoleon” Croatian style

Here is the recipe:

2 baked puff Pastry shells (trim to square pan after baking)

filling:

5 oz cornstarch

8 eggs separated

13 tbsp sugar

2 tsp vanilla

2 tbsp rum

4.25 cups whole milk

preparation:

1. Mix cornstarch. egg yolks, sugar, vanilla, rum and a few tablespoons cold milk

2. Heat up milk in double boiler

3. Add egg mixture to warm milk and  stir nonstop with wire neater until thick 

4. Beat egg whites until stiff. Fold 1/2 into cooled custard, discard the rest

5. Place a layer of pastry on the bottom of the pan.Spread evenly with custard, place second layer of pastry on top, pressing down slightly. Sprinkle with powdered sugar on top. Refrigerate for three hours before cutting.