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Prep Time: 30 minutes (plus 1 hour for filling to set)
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Cook Time: 20-25 minutes
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Inactive Time: 1 hour (chilling) + 30 minutes (cooling)
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Total Time: 2 hours 25 minutes (not including optional overnight rest)
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Yield: 8 generous pop tarts
Intensity Levels
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Skill Level: Intermediate
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Effort: Moderate
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Project Type: A rewarding weekend bake, perfect for bakers comfortable with laminated dough.
Ingredients
For the Sourdough Discard Pastry:
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240 grams (2 cups) All-Purpose Flour, plus more for dusting
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1 tablespoon (12 grams) Granulated Sugar
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1 teaspoon (5 grams) Fine Sea Salt
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227 grams (1 cup) Unsalted Butter, cold and cut into ½-inch slices
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170 grams (¾ cup) Sourdough Starter Discard (100% hydration, unfed)
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60 grams (¼ cup) Cold Full-Fat Sour Cream
For the Fillings (Choose One or Mix & Match):
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Classic Strawberry: ½ cup strawberry jam + 1 teaspoon cornstarch
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Brown Sugar Cinnamon: ½ cup light brown sugar + 1 ½ teaspoons cinnamon + 1 tablespoon all-purpose flour
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Fudgy Chocolate: ⅓ cup Nutella or ½ cup chocolate chips
For the Egg Wash & Topping:
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1 large Egg, beaten with 1 teaspoon of water
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Coarse Sugar, for sprinkling (optional)
For the Simple Glaze (Optional):
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120 grams (1 cup) Powdered Sugar
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2-3 tablespoons Milk or Cream
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½ teaspoon Vanilla Extract
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A pinch of Salt
Instructions
Part 1: Create the Flaky Layers
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Combine Dry Ingredients: In a large bowl, whisk together the flour, sugar, and salt.
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Incorporate Butter: Scatter the cold butter slices over the flour mixture. Using a pastry cutter, two forks, or your fingertips, work the butter into the flour until the pieces are about the size of large peas. Some unevenness is good—it creates flakiness.
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Add Wet Ingredients: In a small bowl, mix the sourdough discard and cold sour cream until combined. Pour this mixture into the flour-butter bowl.
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Bring Dough Together: Use a fork or your hands to mix until a shaggy, crumbly dough forms. It will seem dry at first, but keep working it until there are no dry spots of flour. Do not over-knead.
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Chill the Dough: Turn the dough out onto a lightly floured surface and gently press it into a rough rectangle. Wrap tightly in plastic wrap and refrigerate for at least 1 hour, or up to 48 hours. For an extra tangy flavor, let it rest overnight.
Part 2: Roll, Fill, and Seal
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Prepare for Assembly: Line two baking sheets with parchment paper. Remove the chilled dough from the refrigerator and let it sit for 5-10 minutes to become slightly pliable.
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Roll the Dough: On a floured surface, roll the dough into a large rectangle, about ⅛-inch thick and roughly 12×16 inches. Use a knife or a pastry wheel to trim the uneven edges.
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Cut the Shapes: Cut the rectangle into 8 equal smaller rectangles (about 4×6 inches each). You can also use a ruler and pastry wheel for perfect lines. Re-roll the scraps if needed.
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Add Filling: Place 4 of the rectangles on the prepared baking sheets. Spoon 1-2 tablespoons of your chosen filling into the center of each, spreading it slightly but leaving a ½-inch border around all edges.
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Pro Tip: If using jam, mix it with a teaspoon of cornstarch first to prevent it from boiling over.
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Create the Pop Tarts: Brush the egg wash around the border of each filled rectangle. Carefully place the remaining 4 dough rectangles on top, aligning the edges.
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Seal Tightly: Use your fingertips to press the edges together firmly. Then, use the tines of a fork to crimp the edges all the way around, creating a tight seal that will prevent the filling from leaking.
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Chill Again: Poke the top of each pop tart 3-4 times with a fork or a toothpick to create steam vents. Place the entire baking sheet in the freezer for 15 minutes while you preheat your oven to 375°F (190°C). This final chill ensures maximum flakiness.
Part 3: Bake to Golden Perfection
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Bake: Remove the pop tarts from the freezer. Brush the tops generously with the remaining egg wash and sprinkle with coarse sugar, if using.
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Bake for 20-25 minutes, rotating the pan halfway through, until the pastries are puffed and a deep, golden brown.
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Cool Completely: Transfer the pop tarts to a wire cooling rack and let them cool completely before glazing. This is crucial, as glazing a warm pop tart will cause the glaze to melt and slide right off.
Part 4: The Finishing Touch (Optional)
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Make the Glaze: While the pop tarts cool, whisk together the powdered sugar, 2 tablespoons of milk, vanilla, and salt. Add more milk, one teaspoon at a time, until you reach a thick but pourable consistency.
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Glaze and Serve: Once the pop tarts are completely cool, drizzle or spread the glaze over the top. Allow the glaze to set for about 30 minutes before serving.
Storage & Reheating
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Room Temperature: Store unglazed pop tarts in an airtight container at room temperature for up to 2 days.
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Freezer (Highly Recommended): These pop tarts freeze exceptionally well. Freeze them unglazed on a baking sheet until solid, then transfer to a freezer bag for up to 3 months.
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Reheating: To recapture the flaky texture, reheat frozen or room-temperature pop tarts in a 350°F (175°C) toaster oven or conventional oven for 8-12 minutes until warm. Avoid the microwave, as it will make the pastry soft.
Nutrition Information
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Disclaimer: The following is an approximate nutritional estimate for one pop tart with strawberry jam filling and without glaze. Values can vary significantly based on specific ingredients used.
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Serving Size: 1 Pop Tart
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Calories: ~385
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Total Fat: 23g
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Saturated Fat: 14g
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Cholesterol: 75mg
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Sodium: 250mg
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Total Carbohydrates: 41g
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Dietary Fiber: 1g
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Sugars: 15g
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Protein: 5g
Enjoy the delicious, flaky, and satisfying result of giving your sourdough discard a glorious second life!

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