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Blackberry Sourdough Pop Tarts

These pop tarts bring together the tangy goodness of sourdough with sweet and flavorful fillings, creating a perfect harmony of taste and texture.
Prep Time 25 minutes
Cook Time 30 minutes
Course Breakfast, brunch, Dessert
Cuisine American
Servings 8 People
Calories 460 kcal

Equipment

  • Rolling Pin
  • Measuring cups
  • Measuring spoons
  • Fork
  • Sharp knife
  • Glass Mixing Bowl
  • Pastry Brush

Ingredients
  

Sourdough Pastry

  • 1 cup Sourdough discard
  • 2 cups All-purpose Flour
  • 1 cup Unsalted butter, cold and cubed
  • 1/4 cup Sugar
  • 1 tsp Salt
  • 2 tbsp Cold Water
  • 1 Egg beaten

Blackberry Filling

  • 2 cups Blackberries Frozen is fine
  • 1/4 cup Water
  • 1/4 cup Sugar
  • 1/4 tsp Salt
  • 1 tbsp Cornstarch
  • 2 tbsp Lemon Juice

Lemon Glaze

  • 1/4 cup melted Butter
  • 1/2 cup Confectioner's sugar
  • 1 tbsp Lemon Juice

Instructions
 

Prepare the Sourdough Pastry

  • In a large mixing bowl, combine the all-purpose flour, sugar, and salt.
  • Next, incorporate the cold, cubed butter into the dough. Use your hands or a pastry cutter to blend the butter evenly. The goal is to create a crumbly texture with visible butter pieces – this ensures a flaky pastry.
  • Work in the sourdough starter and cold water until a dough forms.
  • Divide the dough into two equal pieces and shape them into discs.
  • Wrap the dough in plastic wrap and let it rest in the refrigerator for at least 1 hour. This chilling process allows the fats to solidify, resulting in that perfect, buttery flakiness. I allow my dough to rest over night if possible.

Blackberry Filling

  • Begin by making the blackberry filling. Add the blackberries, water, sugar, and salt to a heavy-bottom saucepan.
  • Cook over medium heat until the blackberries burst and release their juices. This should take around 5 minutes.
  • Turn the heat down to low and allow the berries to simmer. 
  • Whisk together the lemon juice and cornstarch. Make sure the lemon juice is cool before combining it with the cornstarch. Slowly stir the slurry into the blackberries.
  • Continue cooking on low heat for around 3 minutes until the sauce thickens. Remove it from the heat. 

Making the Pop Tarts

  • Once the dough has chilled, preheat your oven to 350°F (180°C). On a lightly floured surface, roll out the dough to about 1/8 inch thickness.
  • Using a sharp knife or a pastry cutter, cut the dough into rectangles of your desired size. Keep in mind that uniform sizes ensure even baking.
  • Spread a thin layer of the blackberry filling onto half of the pastry rectangles. If you're feeling adventurous, mix in some sourdough discard for an extra layer of flavor and texture.
  • Place the remaining rectangles on top of the filled ones, creating little pop tart sandwiches. Press the edges to seal, and use a fork to crimp the edges for that classic pop tart look.
  • Brush the tops of your pop tarts with the beaten egg to give them a beautiful golden finish when baked.
  • Place the pop tarts on a parchment-lined baking sheet and bake in the preheated oven for 15-20 minutes or until golden brown.

Preparing the Lemon Glaze

  • While the pop tarts bake, whisk the melted butter, confectioner sugar, blackberry filling and lemon juice together to form a glaze.
  • Spread the glaze over the top of the pop tarts and enjoy!
Keyword discard poptarts, Sourdough discard pop tarts, Sourdough pop tarts