Sourdough Onion & Cheese Flatbread

Sourdough Onion & Cheese Flatbread is a crispy yet airy flatbread topped with caramelized onions, melted cheese, and a touch of herbs. Whether served as a snack, appetizer, or side dish, this flatbread is a delicious way to use sourdough starter or discard while creating a flavorful, homemade treat.

Why You’ll Love This Recipe

• Crispy and flavorful – The perfect balance of crunchy edges and soft, airy dough.
• Great for using sourdough discard – An easy and delicious way to repurpose extra starter.
• Quick and simple – Requires minimal ingredients and effort.
• Versatile – Can be served as a side, pizza base, or snack.
• Customizable – Try different cheeses, toppings, or spices to suit your taste.

Ingredients

(Tip: You can find the complete list of ingredients and their measurements in the recipe card below.)

For the Dough:

• 1 cup active sourdough starter (or discard)
• 2 1/2 cups all-purpose flour
• 1 teaspoon salt
• 1/2 teaspoon sugar
• 3/4 cup warm water
• 1 tablespoon olive oil

For the Topping:

• 1/2 small onion, thinly sliced
• 1/2 cup shredded mozzarella or cheddar cheese
• 1/2 teaspoon dried oregano
• 1/4 teaspoon black pepper
• 1 tablespoon olive oil

Directions

Prepare the Dough:

1. In a large bowl, combine sourdough starter, flour, salt, sugar, warm water, and olive oil.
2. Knead for 8-10 minutes until smooth and elastic.
3. Cover and let rest for 4-6 hours (or overnight for deeper sourdough flavor).

Shape the Flatbread:

1. Preheat oven to 425°F (220°C). Line a baking sheet with parchment paper.
2. Divide dough into small rounds and stretch each into a flatbread shape.
3. Brush the surface with olive oil, then top with sliced onions, shredded cheese, oregano, and black pepper.

Bake & Serve:

1. Bake for 15-18 minutes until golden brown and crispy.
2. Let cool slightly before serving warm.

Servings and Timing

• Servings: 4 flatbreads
• Prep Time: 15 minutes
• Cooking Time: 18 minutes
• Total Time: 33 minutes
• Calories: 250 kcal per flatbread

Variations

• Caramelized Onion Flatbread – Cook the onions in butter until golden before adding them to the dough for deeper flavor.
• Extra Cheesy – Use a mix of mozzarella, Parmesan, and gouda for a richer taste.
• Garlic & Herb Version – Add minced garlic and fresh rosemary or thyme to the dough for an aromatic twist.
• Spicy Kick – Sprinkle crushed red pepper flakes over the flatbread before baking.
• Whole Wheat Alternative – Swap half of the all-purpose flour for whole wheat flour for a heartier texture.

Storage & Reheating

• Refrigeration – Store leftover flatbread in an airtight container in the refrigerator for up to 3 days.
• Freezing – Wrap in plastic wrap and freeze for up to 2 months. Reheat before serving.
• Reheating – Warm in an oven at 350°F (175°C) for 5-7 minutes or in a toaster oven for crispiness.

FAQs

1. Can I make this flatbread without sourdough starter?

Yes, replace the sourdough starter with an equal mix of flour and water, but the flavor will be less tangy.

2. Can I use fresh herbs instead of dried?

Yes, fresh herbs will enhance the flavor—use three times the amount of fresh herbs compared to dried.

3. Can I use pre-cooked onions instead of raw?

Yes, caramelized onions will add a deeper, sweeter flavor to the flatbread.

4. How do I make the crust crispier?

Bake the flatbread a few extra minutes or broil for 1-2 minutes at the end.

5. What can I serve with this flatbread?

It pairs well with soups, salads, or as a side for pasta dishes.

6. Can I add toppings before baking?

Yes, try adding olives, cherry tomatoes, or mushrooms for extra texture and flavor.

7. Can I make this into a pizza?

Yes, simply add sauce and additional toppings before baking.

8. How do I prevent the flatbread from becoming too dense?

Make sure to knead the dough well and let it rest for the recommended time.

9. Can I cook this in a cast-iron skillet instead of baking?

Yes, cook on medium heat for about 3-5 minutes per side until golden brown.

10. Can I make mini flatbreads instead of one large one?

Yes, divide the dough into smaller portions and adjust the baking time accordingly.

Conclusion

Sourdough Onion & Cheese Flatbread is an easy and delicious way to enjoy the tangy flavor of sourdough with a crispy crust, melted cheese, and savory onions. Whether served as a snack, side dish, or light meal, this flatbread is a versatile and flavorful addition to any table. Try this recipe today for a simple yet satisfying homemade treat!