Swedish Kanelbullar with Slow-Cooked Spiced Apple Filling

These are Swedish-style cinnamon buns — kanelbullar — shaped into tight, domed spirals and finished with crunchy pearl sugar, just like the ones you'd find in a Stockholm konditori. The filling starts with apples cooked low and slow until they collapse into a deeply spiced, jammy paste that weaves through every layer of the soft, cardamom-scented dough.

Ingredients

• tart apples (such as Granny Smith), peeled, cored, and finely diced – about 4 medium (3 cups diced)
• unsalted butter – 2 tablespoons
• light brown sugar, packed – 3 tablespoons
• ground cinnamon – 1½ teaspoons
• ground cardamom – ½ teaspoon
• ground cloves – ⅛ teaspoon
• fine salt – pinch

• whole milk, warmed to 110°F / 43°C – 1 cup
• active dry yeast – 2¼ teaspoons (1 standard packet)
• granulated sugar – ¼ cup
• unsalted butter, softened to room temperature – 6 tablespoons
• large eggs – 2
• ground cardamom – 1½ teaspoons
• fine salt – 1 teaspoon
• all-purpose flour – 3¾ cups

• unsalted butter, very soft – 4 tablespoons
• light brown sugar, packed – 2 tablespoons
• ground cinnamon – 1 teaspoon
• ground cardamom – ¼ teaspoon

• large egg – 1
• whole milk – 1 tablespoon
• Swedish pearl sugar – 3 tablespoons

Instructions

1. Make the apple filling first so it has time to cool completely. In a medium saucepan over low heat, melt the butter, then add the diced apples, brown sugar, cinnamon, cardamom, cloves, and salt. Stir to coat, then cook uncovered over the lowest setting your burner allows for 45–60 minutes, stirring every 10 minutes. The apples should slowly surrender all their liquid, then begin to caramelize and collapse into a thick, dark, jammy paste with little to no pooling liquid. Don't rush this with higher heat — low-and-slow cooking evaporates moisture without scorching, giving you a filling that won't make the dough soggy. Transfer to a bowl and cool completely before using.
2. Make the dough. Combine the warm milk, yeast, and 1 teaspoon of the granulated sugar in the bowl of a stand mixer and let it sit for 5 minutes until foamy. Add the remaining sugar, softened butter, eggs, cardamom, and salt, then add all the flour at once. Mix on low with the dough hook until a shaggy dough forms, then increase to medium and knead for 8–10 minutes until the dough is smooth, soft, and pulls cleanly away from the bowl sides. It should feel slightly tacky but not sticky — it will firm up during the rise.
3. Shape the dough into a ball, cover the bowl with plastic wrap or a damp kitchen towel, and let it rise in a warm spot for 1 to 1½ hours, until roughly doubled in size.
4. Stir together the butter smear ingredients until smooth and spreadable. Punch down the risen dough and turn it out onto a lightly floured surface. Roll it into a large rectangle, roughly 16 × 12 inches (40 × 30 cm). Spread the butter smear evenly over the entire surface, leaving a ½-inch / 1 cm border along one long edge. Spoon the cooled apple filling over the butter smear and spread it into an even layer.
5. Starting from the long edge closest to you (the filled edge), roll the dough up tightly into a log, pressing gently but firmly as you go. Pinch the seam to seal. Using a sharp knife or bench scraper, cut the log into 12 equal pieces, about 1⅓ inches / 3.5 cm wide. To shape in the classic Swedish style: take one piece, hold it in your palm, and use your thumb to press the center down while wrapping the coil around your thumb and tucking the loose end underneath. This creates the tight, domed spiral — not a flat disk. Place each shaped bun on a parchment-lined baking sheet, tucked-end down, spaced 3 inches apart.
6. Cover loosely with plastic wrap and let the buns proof at room temperature for 45–60 minutes, until noticeably puffed and the dough springs back slowly when gently poked. While they proof, preheat your oven to 400°F / 200°C (convection: 375°F / 190°C).
7. Whisk together the egg and milk to make an egg wash. Gently brush each bun with egg wash, being careful not to press down and deflate them. Sprinkle generously with Swedish pearl sugar. Bake for 13–16 minutes, until the buns are a deep golden amber — they should look slightly darker than you'd expect. Let them cool on the pan for 5 minutes before serving.