Name: Krempita
Prep time: 30 min
Cook time: 32 min
Total time: 5 h 2 min
Yield: 12 squares
Cuisine: Serbian cuisine
Ingredients: 500 g all-butter puff pastry, thawed according to package directions; 1000 ml pasteurized whole milk; 90 g granulated sugar — for the yolk custard; 90 g granulated sugar — for the whipped egg whites; 120 g pasteurized egg yolk; 180 g pasteurized egg white, well chilled; 90 g cornstarch; 10 ml vanilla extract

Yield 12 squares

Preparation time 30 minutes

Cooking time 32 minutes

Passive time 240 minutes

Ingredients ↓

Overview

Serbian krempita with crisp puff pastry and a thermometer-checked vanilla filling

Krempita is defined by contrast: brittle pastry on the outside and a deep, trembling but sliceable vanilla layer inside. Household formulas vary enormously, which means a dependable version needs a clear choice about how that filling is built. Here the base is milk custard thickened with cornstarch and enriched with pasteurized yolks; pasteurized whipped whites are folded into the hot custard for volume. That preserves the airy character without relying on ordinary raw egg white.

The pastry is baked separately and docked aggressively so it remains relatively flat. A high, uneven puff looks impressive on its own but makes a poor lid for a soft cream slice. Both sheets need to be dry through the centre before assembly. The upper sheet is cut into twelve squares before it meets the filling, because trying to saw through one brittle sheet after chilling compresses the custard and pushes it out of the sides.

The filling has two independent endpoints. Texture is judged by slow bubbling and a whisk trail that remains visible for a moment. Egg safety is judged with a thermometer: the moving custard must reach at least 71 °C. The probe is kept away from the pan base, which can read hotter than the food. Reaching the correct thickness without reaching the measured temperature is not enough, and reaching 71 °C does not excuse scorching or curdling.

Pasteurized whites are whipped separately and folded in while the custard is still hot, in three additions. The first loosens the custard; later additions preserve more air. The filling is spread immediately between pastry sheets and then cooled promptly. A full four hours of cooling and chilling is part of the total schedule. Krempita cut too soon does not merely look untidy: the starch gel has not finished setting, so the slice cannot support the pastry.

Once chilled, the dessert should cut into a tall square with a soft but stable cream layer and crisp flakes on top. It remains a perishable egg-and-dairy dessert throughout. The pan belongs in the refrigerator within two hours, at 4 °C or below, and portions should not sit on a room-temperature buffet beyond that same two-hour limit.

Practical

ControlDock the pastry thoroughly so the sheets stay flat enough to sandwich a deep cream layer.
ControlTake the custard temperature in the moving mixture, away from the pan base; 71 °C is the safety control, while thick ribbons are the texture control.
ControlPre-cut the top sheet before chilling to avoid crushing the set filling during service.

Ingredients

Pastry

500 g all-butter puff pastry, thawed according to package directions

Vanilla filling

1000 ml pasteurized whole milk
90 g granulated sugar — for the yolk custard
90 g granulated sugar — for the whipped egg whites
120 g pasteurized egg yolk
180 g pasteurized egg white, well chilled
90 g cornstarch
10 ml vanilla extract

Directions

Pastry

Bake the pastry sheetsRoll the pastry into two equal sheets, dock them well and bake until dry, risen and evenly golden. The pastry is ready when the centre feels crisp and dry rather than soft or leathery, with an even golden surface. Target 200 °C.

Custard

Cook the custardWhisk the yolks, 90 g granulated sugar, cornstarch, vanilla and a portion of the cold milk until completely smooth, then temper with hot milk and cook while stirring. The custard is ready when it reaches at least 71 °C, bubbles slowly across the surface and leaves a distinct trail behind the whisk. Target 71 °C. Measure the custard at 71 °C or higher with a food thermometer.
Whip the egg whitesWhip the pasteurized egg whites with the remaining 90 g granulated sugar until glossy medium peaks form. The whites are ready when a lifted beater leaves a peak that stands but still curls slightly at the tip.
Fold in the egg whitesFold the pasteurized whipped whites into the hot custard in three additions, keeping as much volume as possible. The filling is ready when it is evenly pale and aerated with no visible streaks of white or dense custard.
Assemble the krempitaLine the pan with one pastry sheet, spread in the filling and top with the second sheet cut into twelve serving squares. The assembled krempita is ready to cool when the filling is level and every top pastry square sits directly over a future portion.

Cooling

Cool the assembled dessertCool the assembled krempita promptly before fully covering. The krempita is ready to cover when active steaming has stopped and the pan is no longer hot at the centre.
Chill until setRefrigerate until the filling is firm enough to cut cleanly. The krempita is ready when the filling is cold through and a knife cuts a square without the custard flowing from the sides. Target 4 °C or below.

Practical

Practical guidance

Bake the pastry first and keep it dry while the filling is cooked. Set out the pan, spatula and pre-cut top sheet before the custard is finished because the filling should be assembled while still workable. Take the temperature while stirring for a representative reading.

Control points

Custard scorches on the baseGuidance: Heat was too high or stirring paused after the starch began to thicken.Adjustment: Cook over medium heat in a heavy pan and keep the whisk moving across the entire base.
Filling curdlesGuidance: Egg mixture was heated unevenly or too aggressively.Adjustment: Temper with hot milk gradually, stir constantly and stop direct heating once the custard is thick and at least 71 °C.
Slices collapseGuidance: The dessert was cut before the starch gel and aerated custard chilled fully.Adjustment: Give the assembled pan the full refrigerator setting time before portioning.

Nutrition

Serving size1 square, about 170 g
Calories395 kcal
Carbohydrates49 g
Protein8 g
Fat18 g
Fibre1 g
Sodium240 mg

Figures are approximate and vary with ingredient brands, trimming, liquid retention and portioning.

Allergens and food safety

Allergens: Egg, Milk, Wheat/gluten. Use pasteurized egg products and pasteurized milk. Cook the custard to at least 71 °C and verify with a food thermometer. Cool promptly and refrigerate within 2 hours at 4 °C or below. Discard portions left at room temperature for more than 2 hours.

FAQ

Why use pasteurized egg products?

They add an extra safety margin in a dessert whose airy structure traditionally involves eggs. The custard is still cooked to at least 71 °C rather than relying on pasteurization alone.

Why pre-cut the top pastry?

A whole crisp sheet is hard to cut cleanly after the custard sets. Pre-cut squares guide the knife and avoid compressing the filling.

Can the filling be chilled before assembly?

Not for this method. It is spread while warm and fluid enough to level; the setting happens in the assembled pan.

Result: Crisp pastry around a tall, cool vanilla layer that is airy enough to tremble but firm enough to cut cleanly.

Key: Treat thickness and temperature as separate controls: stir to the right custard texture and verify at least 71 °C before assembly.