Sourdough pop tarts hit that sweet spot between nostalgic treat and grown-up bake. They’re buttery, flaky, and just a little tangy from the sourdough, with a jammy center and a simple glaze on top. If you’ve got sourdough discard hanging out in the fridge, this is a great way to use it up.
The dough is easy to work with, and the finished pastries look impressive without being fussy. Make them for a weekend breakfast, a lunchbox surprise, or a cozy afternoon snack with coffee.
What Makes This Recipe So Good
- Great use of discard: The sourdough starter adds flavor and tenderness without needing a long rise.
- Flaky pastry: Cold butter and a simple fold give you layers that bake up crisp and light.
- Customizable fillings: Jam, cinnamon-sugar, chocolate-hazelnut, or lemon curd—use what you love.
- Not too sweet: The tang from the sourdough balances the glaze and filling.
- Make-ahead friendly: The dough and assembled tarts freeze well for fresh bakes anytime.
Shopping List
- For the pastry:
- 2 1/2 cups (300 g) all-purpose flour
- 1 tablespoon granulated sugar
- 1 teaspoon fine sea salt
- 1 cup (225 g) cold unsalted butter, cut into small cubes
- 1/2 cup (120 g) sourdough starter discard (unfed)
- 1/4 to 1/3 cup (60–80 ml) cold water, as needed
- For the filling:
- 3/4 cup jam or preserves (strawberry, raspberry, or your favorite)
- 1 tablespoon cornstarch (optional, for runny jam)
- 1 teaspoon lemon juice (optional, brightens flavor)
- For assembly:
- 1 egg, beaten (for egg wash) or 2 tablespoons milk for a non-egg wash
- Coarse sugar (optional, for sprinkling)
- For the glaze:
- 1 cup (120 g) powdered sugar
- 1–2 tablespoons milk or cream
- 1/2 teaspoon vanilla extract
- Sprinkles or freeze-dried fruit powder (optional)
Step-by-Step Instructions
- Mix the dry ingredients: In a large bowl, whisk together flour, sugar, and salt.
- Cut in the butter: Add cold butter cubes and use a pastry cutter or your fingertips to work them in until you have pea-sized bits with some larger flakes. Keep it chunky for flakiness.
- Add starter and water: Stir in the sourdough discard.
Sprinkle in cold water a tablespoon at a time, mixing gently until the dough just comes together. It should be slightly shaggy, not wet.
- Chill the dough: Divide into two disks, wrap, and chill 45–60 minutes. This relaxes the gluten and keeps the butter cold.
- Prep the filling: If your jam is runny, mix it with cornstarch and lemon juice.
Set aside.
- Roll out the dough: On a lightly floured surface, roll one disk into a rectangle about 1/8-inch thick. Trim the edges to square it off.
- Cut rectangles: Cut the dough into 3 x 4-inch rectangles. You’ll need pairs for tops and bottoms.
Gather scraps, chill briefly, and re-roll.
- Fill the bottoms: Place half the rectangles on a parchment-lined sheet. Brush edges with egg wash. Spoon about 1 to 1 1/2 tablespoons of filling into the center, leaving a border.
- Seal and crimp: Top with remaining rectangles.
Press edges to seal, then crimp with a fork. Poke 3–4 small vents on top with a fork.
- Chill again: Pop the tray into the fridge or freezer for 15–20 minutes. Cold pastry equals better layers.
- Preheat and bake: Heat the oven to 375°F (190°C).
Brush tops with egg wash, sprinkle with coarse sugar if you like, and bake 20–25 minutes, until golden and crisp.
- Cool and glaze: Let the pop tarts cool 15–20 minutes. Whisk powdered sugar, milk, and vanilla into a thick but pourable glaze. Spoon or spread over the tops.
Add sprinkles if you’re feeling festive.
Keeping It Fresh
- Room temperature: Keep glazed pop tarts in an airtight container for up to 2 days. The crust stays crisp best unglazed; glaze just before serving if possible.
- Refrigerator: Store up to 5 days. Reheat in a 325°F (165°C) oven for 8–10 minutes to revive flakiness.
- Freezer: Freeze baked, unglazed pop tarts for up to 2 months.
Reheat from frozen at 350°F (175°C) for 12–15 minutes, then glaze.
- Make-ahead: Assemble unbaked tarts and freeze on a sheet tray until solid. Transfer to a bag and bake from frozen, adding 3–5 minutes to the time.
Why This is Good for You
- Better balance: The sourdough starter adds organic acids that may make the pastry a bit easier to digest compared to standard doughs.
- Less sugar overall: Because the dough has tang and flavor, you don’t need a heavy-handed glaze or extra-sweet filling.
- Real ingredients: Simple pantry staples—flour, butter, fruit jam—beat boxed treats with additives.
- Built-in portion control: Each pastry is a tidy single serving, which makes mindful snacking easier.
Common Mistakes to Avoid
- Overworking the dough: Too much mixing or kneading makes tough pastry. Stop as soon as it comes together.
- Warm butter: If the butter melts into the flour, you’ll lose layers.
Chill the dough whenever it starts to feel soft.
- Overfilling: Too much jam leaks out and burns. Stick to about 1 to 1 1/2 tablespoons per tart.
- Skipping vents: Steam needs an exit. Fork holes prevent blowouts and help even baking.
- Glazing too hot: If you glaze while they’re hot, it slides right off.
Wait until just warm.
Recipe Variations
- Cinnamon Brown Sugar: Mix 1/3 cup brown sugar with 1 1/2 teaspoons cinnamon and 1 tablespoon flour. Dot the filling with a little softened butter before sealing.
- Chocolate Hazelnut: Spread 1 tablespoon chocolate-hazelnut spread and add a few chopped toasted hazelnuts. Finish with a cocoa glaze (swap 1 tablespoon powdered sugar for cocoa powder).
- Lemon Curd: Use thick lemon curd and top with a lemon glaze (add lemon zest and swap milk for lemon juice).
- Berry Cream Cheese: Mix 3 ounces softened cream cheese with 1 tablespoon sugar and 1/2 teaspoon vanilla.
Add a teaspoon of jam on top, then seal.
- Maple Pecan: Combine 1/3 cup finely chopped toasted pecans with 2 tablespoons maple syrup and a pinch of salt. Glaze with maple icing.
- Whole-Wheat Twist: Swap 25–30% of the flour for whole wheat. Add an extra teaspoon or two of water if the dough feels dry.
FAQ
Can I make these without sourdough starter?
Yes.
Replace the starter with 1/4 cup cold water plus 1 teaspoon lemon juice or apple cider vinegar. The dough won’t have the same depth, but it will still be flaky and tasty.
Do I need to feed my starter first?
No. Use unfed discard right from the fridge. It offers flavor and tenderness without extra rise.
Can I use store-bought pie dough?
You can.
It won’t be as flaky or tangy, but it’s a fast shortcut. Roll a bit thinner than usual to avoid a heavy crust.
How do I keep the filling from leaking?
Don’t overfill, brush the edges with egg wash, crimp firmly, and chill before baking. Thickening runny jams with a little cornstarch also helps.
What if I don’t have a pastry cutter?
Use your fingertips to pinch the butter into the flour, or pulse everything in a food processor.
If you use a processor, stop as soon as pea-sized bits form.
Can I make them gluten-free?
Yes. Use a good 1:1 gluten-free flour blend that includes xanthan gum. Add an extra tablespoon of water if the dough seems crumbly, and handle gently.
How do I reheat without losing flakiness?
Warm in a 325°F (165°C) oven or toaster oven for 6–10 minutes.
Avoid microwaving—it softens the crust and makes it chewy.
Can I skip the glaze?
Absolutely. For a less sweet option, brush with egg wash and sprinkle with coarse sugar before baking. They’re great plain, too.
Final Thoughts
Homemade sourdough pop tarts hit every note: crisp edges, tender layers, and a bright, jammy center.
They feel special but don’t require pastry-chef skills, especially if you keep the butter cold and the steps simple. Once you make a batch, you’ll see how easy it is to switch up fillings and glazes based on what you have. Keep a few in the freezer for quick wins on busy mornings.
They’re proof that a little sourdough magic can turn a childhood favorite into a new staple.
Sourdough Pop Tarts – Flaky, Tangy, and Fun to Make
Ingredients
- For the pastry:
- 2 1/2 cups (300 g) all-purpose flour
- 1 tablespoon granulated sugar
- 1 teaspoon fine sea salt
- 1 cup (225 g) cold unsalted butter, cut into small cubes
- 1/2 cup (120 g) sourdough starter discard (unfed)
- 1/4 to 1/3 cup (60–80 ml) cold water, as needed
- For the filling:
- 3/4 cup jam or preserves (strawberry, raspberry, or your favorite)
- 1 tablespoon cornstarch (optional, for runny jam)
- 1 teaspoon lemon juice (optional, brightens flavor)
- For assembly:
- 1 egg, beaten (for egg wash) or 2 tablespoons milk for a non-egg wash
- Coarse sugar (optional, for sprinkling)
- For the glaze:
- 1 cup (120 g) powdered sugar
- 1–2 tablespoons milk or cream
- 1/2 teaspoon vanilla extract
- Sprinkles or freeze-dried fruit powder (optional)
Instructions
- Mix the dry ingredients: In a large bowl, whisk together flour, sugar, and salt.
- Cut in the butter: Add cold butter cubes and use a pastry cutter or your fingertips to work them in until you have pea-sized bits with some larger flakes. Keep it chunky for flakiness.
- Add starter and water: Stir in the sourdough discard. Sprinkle in cold water a tablespoon at a time, mixing gently until the dough just comes together. It should be slightly shaggy, not wet.
- Chill the dough: Divide into two disks, wrap, and chill 45–60 minutes. This relaxes the gluten and keeps the butter cold.
- Prep the filling: If your jam is runny, mix it with cornstarch and lemon juice. Set aside.
- Roll out the dough: On a lightly floured surface, roll one disk into a rectangle about 1/8-inch thick. Trim the edges to square it off.
- Cut rectangles: Cut the dough into 3 x 4-inch rectangles. You’ll need pairs for tops and bottoms. Gather scraps, chill briefly, and re-roll.
- Fill the bottoms: Place half the rectangles on a parchment-lined sheet. Brush edges with egg wash. Spoon about 1 to 1 1/2 tablespoons of filling into the center, leaving a border.
- Seal and crimp: Top with remaining rectangles. Press edges to seal, then crimp with a fork. Poke 3–4 small vents on top with a fork.
- Chill again: Pop the tray into the fridge or freezer for 15–20 minutes. Cold pastry equals better layers.
- Preheat and bake: Heat the oven to 375°F (190°C). Brush tops with egg wash, sprinkle with coarse sugar if you like, and bake 20–25 minutes, until golden and crisp.
- Cool and glaze: Let the pop tarts cool 15–20 minutes. Whisk powdered sugar, milk, and vanilla into a thick but pourable glaze. Spoon or spread over the tops. Add sprinkles if you’re feeling festive.
