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Sourdough Discard Italian Stromboli

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  • Author: Mari
  • Total Time: 1 hour 40 minutes
  • Yield: 6 slices

Description

This Sourdough Discard Italian Stromboli is the perfect way to use up your leftover sourdough starter. Packed with mozzarella, pepperoni, salami, and roasted red peppers, this golden, crispy stromboli is rolled into sourdough discard dough, topped with sesame or everything seasoning, and baked to bubbling perfection. A savory, cheesy hit for dinner, snacks, or game day spreads.

Ingredients

For the Dough:

  • 1 cup sourdough discard (unfed)

  • 1 1/4 cups all-purpose flour

  • 1/2 tsp salt

  • 1/2 tsp sugar

  • 1/4 tsp instant yeast

  • 1/3 cup warm water

  • 1 tbsp olive oil

For the Filling:

  • 1/3 cup marinara or pizza sauce

  • 1 1/2 cups shredded mozzarella cheese

  • 1/3 cup sliced pepperoni

  • 1/3 cup sliced salami

  • 1/4 cup roasted red peppers, sliced

  • 1/2 tsp Italian seasoning

  • Optional: fresh basil, red pepper flakes

For the Topping:

 

  • 1 egg, beaten (for egg wash)

  • 1 tbsp sesame seeds or everything bagel seasoning

  • Olive oil, for brushing

Instructions

  • Make the Dough: In a bowl, combine sourdough discard, flour, salt, sugar, yeast, and warm water. Stir into a shaggy dough. Add olive oil and knead 5–7 minutes until smooth. Cover and let rise for 1 hour or until slightly puffy.

  • Preheat & Roll: Preheat oven to 425°F (220°C). Line a baking sheet with parchment. Roll dough into a 10×14 inch rectangle.

  • Assemble: Spread marinara over dough, leaving a 1-inch edge. Layer with mozzarella, pepperoni, salami, roasted peppers, and Italian seasoning.

  • Shape the Stromboli: Roll tightly from the long side. Pinch ends and place seam-side down on baking sheet. Slash top with a knife, brush with egg wash, and sprinkle with sesame or everything seasoning.

 

  • Bake: Bake for 20–25 minutes until golden and bubbly. Cool 5–10 minutes before slicing. Serve with extra marinara on the side.

Notes

  • Add olives, sautéed mushrooms, or spinach for extra flavor.

  • Can be prepped ahead and baked fresh for entertaining.

 

  • Use parchment to help with rolling if dough is sticky.

  • Prep Time: 15 minutes
  • Rest Time: 1 hour
  • Cook Time: 25 minutes
  • Category: Appetizer, Main Course
  • Method: Baking
  • Cuisine: Italian-American

Find it online: https://yumandjoy.com/sourdough-discard-italian-stromboli/