Roasted Plum and Cinnamon Czech Croissants

What Makes This Special

These croissants combine Czech-style slightly enriched dough with a roasted plum and cinnamon filling, using slow, controlled proofing to develop a tender and structured crumb. Roasting the plums intensifies their color and flavor, while cinnamon provides an autumnal note that permeates the filling.

Ingredients

Every ingredient serves a specific purpose: bread flour and plain flour balance strength and tenderness, sugar aids browning, salt regulates yeast, egg and milk enrich, and cold butter creates lamination layers. Roasted, cinnamon-dusted plums give a seasonal filling, and the final egg wash ensures even browning.

For the Dough

• 250 g strong bread flour: Provides gluten structure.
• 180 g plain flour: Softens overall texture.
• 50 g caster sugar: Sweetens, supports browning.
• 10 g fine sea salt: Controls yeast and balances flavor.
• 8 g instant yeast: Provides leavening.
• 220 ml whole milk, cold: Hydrates and enriches.
• 1 large egg (about 50 g): Adds fat and structure.

For the Butter Layer

• 250 g unsalted butter, cold: Laminates dough for flake.

For the Roasted Plum Filling

• 250 g ripe plums, halved: Autumnal filling, color and tartness.
• 35 g light brown sugar: Sweetens and aids caramelization.
• 2 tsp ground cinnamon: Aromatic, autumnal.
• 1 tbsp unsalted butter: Fat for roasting.

For Finishing

• 1 egg yolk + 15 ml whole milk: Egg wash for shine and browning.

Instructions

Step 1: Roast the Plums

Preheat oven to 200°C (fan 180°C). Arrange plum halves, cut side up, on baking tray lined with parchment. Sprinkle with brown sugar and cinnamon, dot with 1 tbsp butter. Roast 20–25 minutes, until juices run and edges caramelize. Cool, then chop finely. Roasting concentrates juices, deepens color, and reduces water content, which prevents soggy dough.

Step 2: Prepare the Dough

In a stand mixer with dough hook, combine bread flour, plain flour, sugar, salt, and yeast (on opposite sides of bowl). Add cold milk and egg. Mix on low for 3 minutes, then raise to medium for 7 minutes. Dough should clean the bowl but remain soft and tacky. Knead by hand 30 seconds. Shape into a rectangle. Wrap and chill 45 minutes. Chilling controls yeast activity and firms gluten for lamination.

Step 3: Prepare Butter Block

Cut 250 g butter into slices. Lay between two sheets parchment; bash and roll into a 15 x 15 cm square, about 1 cm thick. Chill until firm but pliable, 15 minutes. If butter is too hard, it will break; too soft, it will leak during rolling.

Step 4: Laminate the Dough

On a lightly floured surface, roll chilled dough into a 30 x 15 cm rectangle. Place butter block on lower half. Fold upper half of dough over butter to enclose. Pinch edges to seal. Roll into a 45 x 20 cm rectangle. Fold into thirds (letter fold). Wrap and chill 30 minutes. Repeat rolling and folding (in thirds), chill 30 minutes. Repeat once more (total 3 folds, 3 chills). Each fold multiplies layers, trapping steam for flakiness.

Step 5: Final Roll and Cut

Roll dough into a 60 x 25 cm rectangle, 4 mm thick. Trim edges for sharp layers. Cut into 12 long triangles (base about 8 cm wide). Cold dough preserves layers; trimming exposes distinct lamination.

Step 6: Fill and Shape

Place 1 tablespoon of chopped roasted plum filling at the wide end of each triangle. Make a small slit at the center of the base (helps spiral tighter). Roll up from base to tip, keeping layers visible. Place point-side down on lined tray, curve into crescent.

Step 7: Proof

Loosely cover trays with plastic wrap. Proof at 24°C for 2–3 hours, or until croissants nearly double in size and jiggle when tray is shaken. This is the critical step: if under-proofed, croissants will be dense and tear; if over-proofed, they will collapse. Judge by volume and wobble, not time.

Step 8: Bake

Preheat oven to 200°C (fan 180°C). Mix egg yolk and milk. Brush croissants gently, avoiding exposed layers (prevents pooling and burning). Bake 18–22 minutes, rotating tray halfway, until deep golden. Transfer to rack immediately to prevent soggy bottoms.

Pro Tips

• Proof by eye, not by clock: aim for visibly larger, well-aerated croissants with a slight jiggle.
• Keep butter and dough at similar firmness during lamination. If butter breaks or melts, chill dough and re-roll.
• Roasted plums must be cooled and not watery, or they will leak during shaping and bake.

Troubleshooting

Problem? Butter leaks out during baking. Solution: Butter was too soft or dough too warm during lamination. Always chill between folds.

Another issue? Croissants are dense. Solution: Under-proofed. Next time, proof until visibly expanded and jiggly. Cooler rooms require longer proofing.

Variations

• Swap plums for roasted apples and increase cinnamon for a sharper autumn profile.
• Add a spoonful of ground poppy seeds to the filling for a classic Czech note.
• Omit filling for plain croissants; bake as directed.

Storage

Store cooled croissants in an airtight container at room temperature for up to 2 days. Reheat at 180°C for 5 minutes to refresh. Freeze up to 1 month; thaw and reheat as above.