Blueberry Turnovers

These golden, flaky blueberry turnovers are filled with jammy homemade blueberry pie filling, wrapped in buttery store-bought puff pastry, and finished with a deep purple blueberry glaze made from the filling's leftover juice. They make the perfect quick and easy sweet treat and look and taste like something from a proper bakery.

Best Blueberry Turnovers Recipe

This recipe stands out from other blueberry turnovers online for three reasons. First, the filling: instead of a quick stovetop compote, I use my homemade blueberry pie filling, a proper, thick, jammy filling that holds together inside the pastry without leaking. Second, the technique: I share step-by-step instructions on how to work with puff pastry correctly, with the exact temperature tips most recipes skip. Third, the glaze: powdered sugar combined with the leftover blueberry juice from the filling, giving you a natural deep purple finish with zero extra ingredients.

I also give my honest take on what does and doesn't work, including why I recommend my quick, easy rough puff pastry over store-bought and why I wouldn't use frozen blueberries, even though many other recipes say it is fine.

A short story: first made these when a friend arrived unexpectedly. I had blueberry pie filling in the fridge and puff pastry in the freezer, and within an hour, 8 golden turnovers were on the table.

Katalin's Take on Store-Bought vs. Rough Puff Pastry

This is the question that matters most for this recipe, because the pastry is half the dessert.

Store-bought puff pastry is what I used here, and it works in a pinch. The turnovers puffed up, turned golden, and everyone at the table was impressed. Just make sure you choose an all-butter variety rather than one made with vegetable fat, as the flavor difference is significant.

My rough puff pastry, on the other hand, has more distinct, visible layers, a richer buttery flavor, and a crunch that store-bought simply cannot match. The method is far simpler than classic puff pastry, and once you try it, you will find it hard to go back. If you have an extra 30 minutes, I genuinely recommend making it. You can find the full recipe and video at my quick and easy rough puff pastry post.

Start with the Blueberry Filling

The filling is the shortcut that makes this recipe so effortless. My homemade blueberry pie filling uses just five simple ingredients. For 8 turnovers, you only need half the batch, so you can use the rest spooned over pancakes, swirled into yogurt, or straight from the jar.

Cook the fresh blueberries with water, sugar, and lemon juice in a saucepan over medium heat for about 8 to 9 minutes, until the mixture bubbles and thickens slightly.

In a separate bowl, mix the cornstarch with a little water until smooth, stir in a tablespoon of the warm blueberry sauce to temper it, then gradually pour the cornstarch mixture into the saucepan.

Stir constantly and cook for another minute until the blueberry mixture thickens into a glossy, jammy filling.

If you do not have time to make the filling from scratch, half a can of store-bought blueberry pie filling works too. The homemade version has a more natural, less sweet flavor and a better texture, but I would rather you make the turnovers with whatever you have available.

One critical rule, regardless of which filling you use: it must be completely cold before it goes anywhere near the pastry. Warm filling melts the butter in the dough, which means leakage during baking. If you made the filling that day, let it cool to room temperature first, then refrigerate until cold.

How to Work with Puff Pastry

Temperature control is the single most important skill in this recipe. Puff pastry rises by trapping steam between buttery layers in the oven, and that only happens if the butter is cold and solid when you put it in. The moment the butter melts before baking, those layers collapse.

Keep the pastry in the fridge until you are ready to work with it. Thaw it overnight in the fridge, not on the counter. Once you take it out, work quickly. If the pastry starts to feel soft or warm up as you touch it at any point, stop, slide everything onto a tray, and refrigerate for 10 minutes before continuing.

One tip that makes a noticeable difference: once assembled, place turnovers on a lined tray and slide them into the freezer for 10 minutes while the oven preheats. Cold pastry hitting a very hot oven is exactly what creates those dramatic, separate, flaky layers.

Assemble and Bake Your Blueberry Turnovers

Turn the puff pastry out onto a lightly floured surface and cut it into 6x6-inch (15x15 cm) squares. My rough puff pastry recipe makes 8 turnovers. Store-bought dough (e.g., Pepperidge Farm Frozen Pastry Dough Sheet (17.3 oz) also makes 4, but since the package contains 2 sheets, you can make 8 turnovers with that as well.

Spoon the cold blueberry filling into the center of each square, roughly 1.5 to 2 tablespoons per turnover. I will be honest and admit I overfilled mine slightly, but resist that temptation. Overfilling makes the edges impossible to seal, and the filling will only burst out during baking. Keep it in the center with a generous border of pastry around it. I suggest saving one or two tablespoons of the blueberry juice here to use for the glaze.

Lightly brush the edges of each square with egg wash. Fold one corner diagonally to the opposite corner to form a triangle. Press the edges together firmly with your fingers, then run a fork over them to crimp and seal along the seam.

Score two or three small slits on the top of each turnover to allow steam to escape, then brush the tops generously with egg wash.

Put the pastry tray in the freezer or fridge while you preheat the oven to 200°C (390°F).

Once the oven is ready, bake the pastries at 200°C (390°F) for 25 minutes until well puffed and golden brown. Check the bottom(!) of the turnovers; when they are golden and baked, they are ready to come out of the oven.

Make the Blueberry Glaze

While the turnovers are baking, make the glaze. In a small bowl, combine sugar and 1 tablespoon of the blueberry juice left over from the filling and stir until smooth. The juice turns the glaze a natural, deep purple-pink color that looks stunning drizzled over the golden pastry, with no food coloring needed, just the fruit doing its job. Add more powdered sugar if too thin, add more blueberry juice if too thick.

Drizzle it over the cooled turnovers and sprinkle over a little extra powdered sugar if you like. The glaze is not strictly necessary, but that pop of color takes these turnovers to another level.

Storing & Freezing

Blueberry turnovers are at their best on the day they are baked. You can store leftovers in an airtight container at room temperature for up to a day, or wrap them in plastic wrap and keep them in the refrigerator for up to two days.

Reheat in the oven at 180°C (355°F) for 5 to 10 minutes to restore some crispness. Avoid the microwave, which makes the pastry soft and soggy.

To freeze, fully assemble the turnovers, but do not bake them. Freeze on a lined tray until solid, then transfer to a freezer-safe bag for up to two months. Bake directly from frozen at 200°C (390°F), adding 5 extra minutes to the baking time.

Flavor Variations

The method works exactly the same with almost any berry filling, so use this recipe as a base and vary the filling depending on what you have.

For other berry options, blackberries, strawberries, or raspberries work wonderfully. Just pay attention to cooking the fruits to the right consistency, thick enough.

For spiced versions, my puff pastry apple turnovers use a cinnamon-spiced cooked apple filling, and my puff pastry pumpkin turnovers are the ultimate Fall version of this simple recipe.

You can also add half a teaspoon of cinnamon or cardamom to the blueberry filling for a warm, spiced twist, or mix in a handful of raspberries or sliced peaches.

Ingredient Substitutions

On frozen blueberries: I haven't made this recipe with frozen blueberries, and I wouldn't recommend it. Frozen blueberries release a significant amount of liquid when they cook down, and you would need to cook the filling for a long time, then probably thicken it with more cornstarch - and by that time, the blueberries would probably all get mushy. Fresh blueberries give you a much better result.

On using raw fresh blueberries: do not use them uncooked. Raw blueberries have too much moisture and not enough structure to hold up as a filling. They will burst and leak. Always cook the filling first and let it cool completely before using.

On store-bought filling: half a can works fine and makes this recipe even faster. Most canned fillings are quite sweet, so you may want to reduce the powdered sugar in the glaze slightly.

On pie crust instead of puff pastry: technically possible, but it gives a denser texture rather than the light, flaky layers. If you prefer a pie crust pastry, check out my apple hand pies and pumpkin hand pies for more details.

Expert Tips to Make Blueberry Turnovers

1. When working with the puff pastry, use a sharp knife or pizza cutter and cut in one clean motion. A dull blade or a sawing motion compresses the pastry layers on the sides, which stops them from rising properly during baking.
2. Bake on parchment paper, not a silicone mat. Silicone traps moisture underneath the pastry and makes the bottoms soft instead of crisp. Parchment gives you a much crisper result.
3. Transfer the baked turnovers to a wire rack immediately after removing them from the oven. Leaving them on the hot tray creates steam underneath, which softens the bottoms.
4. Let them cool at least 10-15 minutes before taking a bite. The blueberry filling inside is extremely hot straight from the oven.

What Equipment to Use

Use a digital scale to measure your ingredients for the most accurate measurements and best results.

Puff pastry turnovers must be cooked quickly at a high temperature to achieve a flaky outside and thoroughly cooked inside. Since some oven temperatures can vary slightly, a digital oven thermometer ensures you have the correct baking temperature.

I also recommend a silicone pastry brush, which is very handy for ensuring your egg wash is distributed thinly and evenly.

Try Some of My Other Blueberry Desserts

If you loved these blueberry turnovers, here are more recipes worth making next:

• Blueberry Cream Pie
• Blueberry Delight
• Blueberry Heaven on Earth Cake
• Blueberry Ricotta Cake
• Blueberry Cookies
  

Also check out my roundup of 45+ puff pastry desserts.

Have you tried this recipe?

Please leave a 5-star ⭐️⭐️⭐️⭐️⭐️ rating on the recipe card and consider leaving a comment as well!