1½cupsunsalted butter, very cold (cut into a flat square)
For the Filling
½cupalmond paste, crumbled
¼cupraspberry jamor your choice of fruit preserve
¼cupsliced almonds
For the Egg Wash
1egg, lightly beaten
Instructions
In a small bowl, combine 1/2 cup warm milk, 1 tbsp sugar, and active dry yeast. Let it sit for 5–10 minutes until frothy.
In a large bowl, mix the flour, remaining sugar, salt, eggs, and softened butter. Add the yeast mixture and knead until a smooth, elastic dough forms. Cover and let rise for 1 hour.
Place the unsalted butter between two sheets of parchment paper and gently pound it into a flat, even square. Chill until firm.
Roll the dough into a large rectangle. Place the butter block in the center, fold the dough over it, and seal the edges. Roll out into a long rectangle and perform three folds, chilling for 20–30 minutes between folds.
Roll the laminated dough into a 1/4-inch thick layer. Spread a thin layer of raspberry jam, sprinkle crumbled almond paste and sliced almonds, then roll up and cut into individual portions.
Place the cut pastries on a parchment-lined baking sheet and let proof for 30–45 minutes at room temperature.
Preheat your oven to 375°F (190°C). Brush each pastry with egg wash and bake for 15–20 minutes until golden brown.
Remove from the oven, let cool on a rack, and serve warm or at room temperature.
Notes
Ensure all ingredients and dough components are at the correct temperatures. Do not rush the chilling periods for optimal flakiness. The dough can be made a day ahead and refrigerated.