🥐 Homemade Sourdough Blueberry Croissants
Flaky, Buttery, Tangy & Bursting with Blueberries
These sourdough blueberry croissants are the perfect mix of bakery-style flakiness and homemade comfort. They are buttery, crisp on the outside, soft and airy inside, with a sweet blueberry filling that melts beautifully while baking. The sourdough adds a light tang that makes them even more flavorful than regular croissants.
This is a slightly advanced recipe, but the result is absolutely worth it — real pastry-shop quality at home.
⭐ Why You’ll Love This Recipe
- Ultra flaky buttery layers
- Sweet & juicy blueberry filling
- Light sourdough tang for depth of flavor
- Bakery-style croissants at home
- Perfect for breakfast or dessert
- Freezer-friendly dough option
🧾 Ingredients
For the Dough (Detrempe)
- 3 cups all-purpose flour (375g)
- ½ cup active sourdough starter (100g)
- ¾ cup cold milk (180ml)
- 2 tablespoons sugar
- 1 teaspoon salt
- 2 tablespoons softened butter
For Lamination (Butter Layer)
- 1 cup cold unsalted butter (225g)
Blueberry Filling
- 1 cup fresh or frozen blueberries
- 2 tablespoons sugar
- 1 teaspoon cornstarch
- 1 tablespoon lemon juice
For Brushing
- 1 egg (egg wash)
- 1 tablespoon milk
👩🍳 Instructions
🥣 Step 1: Make the Dough
In a bowl, mix sourdough starter, milk, sugar, and salt. Add flour and mix until a rough dough forms. Add softened butter and knead lightly for 3–5 minutes.
Cover and rest for 4–6 hours at room temperature until slightly puffy.
Then refrigerate overnight (8–12 hours) for better flavor and easier rolling.
🧈 Step 2: Prepare Butter Block
Place cold butter between two sheets of parchment paper. Roll into a square (about 6×6 inches). Chill until firm but pliable.
🍞 Step 3: Lamination (Creating Layers)
Roll dough into a large rectangle. Place butter block in the center and fold dough over it like an envelope.
Now do 3 folds (turns):
- Roll out dough
- Fold into thirds
- Chill 30 minutes between each fold
This creates flaky croissant layers.
🫐 Step 4: Make Blueberry Filling
In a small pan, cook blueberries, sugar, lemon juice, and cornstarch for 3–5 minutes until slightly thick and jam-like.
Cool completely before using.
✂️ Step 5: Shape Croissants
Roll dough into a large rectangle and cut into triangles.
Place a small spoon of blueberry filling at the base of each triangle.
Roll tightly into croissant shape and place on baking tray.
❄️ Step 6: Final Proof
Cover and let croissants rise for 2–4 hours until puffy and airy.
They should feel soft and slightly jiggly.
🥐 Step 7: Bake
Preheat oven to 190°C (375°F).
Brush croissants with egg wash.
Bake for 18–22 minutes until golden brown and flaky.
🍽️ Step 8: Serve
Let them cool slightly and enjoy warm.
Optional toppings:
- Powdered sugar
- Extra blueberry glaze
- Honey drizzle
- Vanilla cream
💡 Tips for Perfect Croissants
- Keep butter cold for flakiness
- Don’t rush resting time
- Roll gently to avoid melting butter
- Chill dough between folds
- Use thick blueberry filling to avoid leaking
🔄 Variations
- Chocolate Sourdough Croissants – replace blueberry with chocolate
- Cream Cheese Blueberry Croissants – add cream cheese filling
- Lemon Blueberry Version – add lemon zest for freshness
- Almond Croissants – fill with almond cream instead
🧊 Storage
- Store in airtight container for 2–3 days
- Reheat in oven for crispiness
- Freeze unbaked shaped croissants for up to 1 month
🥐 Final Thoughts
These homemade sourdough blueberry croissants are flaky, buttery, and full of rich flavor. The sourdough adds depth, while the blueberry filling gives a sweet, fruity burst in every bite.
