The marriage of sourdough and cast iron is a timeless tradition born from the necessity of heat retention. Long before modern ovens, heavy iron vessels were the primary way to mimic the intense, enveloping heat of a stone hearth, allowing a sourdough discard cast iron pizza to achieve that elusive, charred exterior while remaining tender inside.
Sourdough itself is one of the oldest forms of leavening, relying on the wild yeast and lactobacilli present in the air and flour. While traditional loaves take days of patience, using the 'discard'—the portion removed to keep the starter healthy—repurposes the acidity to create a complex, tangy flavor profile that commercial yeast simply cannot replicate.
Culturally, the cast iron skillet has transitioned from a frontier tool to a cherished heirloom. In many European traditions, similar flatbreads were cooked in heavy pans over open fires, creating a communal meal that centered around the warmth of the hearth. This recipe carries that spirit forward, turning a humble byproduct into a centerpiece.
Today, this method is celebrated for its efficiency and texture. The iron conducts heat evenly, frying the bottom of the crust in the oil to create a 'super crunchy' finish that mimics the high-temperature environment of a professional pizza oven.
Why You'll Love It
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- Honestly, it is just so satisfying to use up that 1 cup sourdough discard instead of letting it go to waste. It feels like a little win for the kitchen.
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- Wow, the crunch you get from the cast iron skillet is just something else. It reminds me of those old-school pizzerias where the crust has that perfect, golden snap.
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- I mean, who has time for a long rise? This is just so quick and easy, almost like a little magic trick for a cozy weeknight dinner.
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- Well, there is something so grounding about the smell of 1/2 cup part-skim mozzarella melting in the oven. It just makes the whole house feel warm and inviting.
"I mean, wow... I can't believe how crunchy this is! My kids actually finished the whole thing. Just wonderful."
Essential Ingredient Guide
- 1 cup sourdough discard: This is the heart of the whole thing. It gives that lovely, slight tang that you just can't get with regular flour, and it makes the dough so wonderfully tacky.
- 1/2 cup part-skim mozzarella, shredded: I like to shred this myself if I can, but store-bought is just fine. It melts into these beautiful, gooey bubbles that hold everything together.
- 1/2 teaspoon crushed red pepper flakes: Now, this one is optional, but it adds such a nice little spark of heat. It just wakes up the flavors without being too overwhelming.
- 1 teaspoon dried oregano: Just a pinch of this brings that classic, earthy pizza aroma. I remember when I first started cooking, I'd put too much, but a teaspoon is just right.
- 1 tablespoon extra-virgin olive oil: I use this both in the dough and in the skillet. It's what gives us that gorgeous, fried-bottom crunch that we're all after.
- Pinch sea salt: Don't skip this, even if the discard has some salt. It just rounds everything out and makes the flavors feel complete and grounded.
Complete Cooking Process
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Getting Ready:
First, we get the oven nice and hot. I always make sure the 1 tablespoon extra-virgin olive oil in the skillet is shimmering before the dough goes in—that's the secret.
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Building the Base:
Whisking the 1 cup sourdough discard with a pinch sea salt creates a smooth, slightly tacky dough. It's a simple process, but it's where that tangy flavor starts to settle in.
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Creating the Crunch:
The magic happens when the dough hits the hot iron. Flattening it to about 1/4 inch ensures it cooks through and gets that super crunchy texture we love.
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Adding the Toppings:
I gently spread the 1/4 cup store-bought pizza sauce, leaving a little room for the crust. Then, the 1/2 cup part-skim mozzarella, shredded, and spices go on top.
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The Final Bake:
Twelve minutes in the oven does all the work. You'll see the cheese bubble and the edges turn a deep golden-brown, which is exactly when it's ready.
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Let the dough rest for a few minutes before cooking; this reduces the risk of it collapsing in the skillet.
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If you want extra crunch, sprinkle a light dusting of baking powder (1/4 teaspoon) into the dough mix.
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Heat your skillet over medium heat until the oil shimmers before adding the dough.
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Let the pizza cool for about 2 minutes before slicing so the cheese sets just right.
Pro Tips
Just take your time and enjoy the process; it'll turn out lovely!
Better For You Treats
I love that this is a more mindful way to enjoy pizza. Since it's naturally gluten-free if your discard is, and low in carbs, it feels a bit lighter on the stomach while still being totally comforting.
Ways to Make it Your Own
You could try a Pesto-Glazed version by swapping the sauce for basil pesto and adding cherry tomatoes. Or, if you're feeling hungry, toss on some sautéed bell peppers and mushrooms for a veggie-loaded feast.
Serving Suggestions
I usually serve mine with a crisp green salad and a splash of lemon vinaigrette. If you want to feel fancy, just add a few fresh basil leaves or a drizzle of balsamic glaze on top.
Frequently Asked Questions
→ Do I really not need any yeast for this?
Nope! The sourdough discard does all the heavy lifting here, so you can skip the waiting and go straight to baking.
→ What if my dough is too sticky to move?
Oh, it can be a bit tacky, yeah. Just use a spatula to gently nudge it into the skillet—it'll settle down once it hits the heat.
→ Can I use a different pan if I don't have cast iron?
You can, but honestly, you'll miss out on that signature crunch. A heavy oven-safe skillet is your best bet for that golden crust.
Nutrition Facts
per serving
420
Calories
16g
Protein
38g
Carbs
18g
Fat
Taste Profile
A savory, tangy, and cheesy experience with a distinct sourdough depth.
Ingredient Substitutions
Don't have an ingredient? Try these alternatives
A bit fresher, just add a pinch of sugar to balance the acidity.
Will be a bit creamier and wetter, so watch the bake time.
Recipe Variations
Try these delicious twists on the original
Pesto-Glazed Sourdough Cast Iron Pizza
Swap the tomato sauce for a vibrant basil pesto and add sliced cherry tomatoes and olives on top. Finish with a drizzle of lemon-infused olive oil before serving.
Veggie-Loaded Sourdough Cast Iron Pizza
Top the dough with sautéed bell peppers, mushrooms, onions, and spinach before adding cheese for a hearty, vegetable-rich version.
Common Mistakes to Avoid
Learn from others' mistakes for perfect results
- Putting the dough in a cold skillet, which prevents the crust from crisping.
- Making the dough too thick, leading to an undercooked center.
- Forgetting the oven mitts—cast iron stays hot for a long time!
Meal Prep & Storage
Make Ahead Tips
You can prepare the dough mixture in advance and keep it chilled, but for the best results, assemble and bake fresh.
Leftover Ideas
Store in the fridge covered with foil; reheat in the oven at 350°F for 10 minutes to bring back that crunch.
Perfect Pairings
Serve this with...
Cooking Timeline
Preheat oven and heat olive oil in the skillet.
Whisk the sourdough discard, oil, and salt together.
Spread dough in the skillet and add toppings.
Bake in the oven until golden and bubbly.
Let cool for 2 minutes and slice.
Easiest Sourdough Discard Cast Iron Pizza – Super Crunchy
The smell of toasted grain and bubbling cheese fills the kitchen with this sourdough discard cast iron pizza. It is a simple, cozy meal that delivers a satisfying, golden-brown crunch in every single bite.
Timing
Prep Time
5 Minutes
Cook Time
12 Minutes
Total Time
17 Minutes
Recipe Details
Ingredients
The Dough
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01
1 cup sourdough discard
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02
1 tablespoon extra-virgin olive oil
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03
Pinch sea salt
The Toppings
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01
1/4 cup store-bought pizza sauce
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02
1/2 cup part-skim mozzarella, shredded
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03
1 teaspoon dried oregano
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04
Optional: 1/2 teaspoon crushed red pepper flakes
Instructions
First things first, let's get that oven preheating to 475°F (245°C). While that's warming up, take your cast iron skillet and drizzle a thin layer of olive oil inside. Set it over medium heat just until the oil starts to shimmer—that's when you know it's ready.
Grab a small bowl and whisk together your 1 cup sourdough discard, 1 tablespoon extra-virgin olive oil, and a pinch sea salt. You're looking for something smooth and just a little bit tacky, honestly.
Carefully transfer that dough into your hot skillet. Now, using your spatula, gently flatten it into a circle to fit the pan. Try to keep it around 1/4 inch thick so it cooks through just right.
Spread your 1/4 cup store-bought pizza sauce over the dough, but leave a little border around the edge for the crust. Then, sprinkle on the 1/2 cup part-skim mozzarella, shredded, along with the 1 teaspoon dried oregano and those optional 1/2 teaspoon crushed red pepper flakes if you like a little kick.
Slide the skillet into the oven for 12 minutes. You'll know it's done when the cheese is all bubbly and the crust has turned a beautiful golden-brown. Use your oven mitts to pull it out, and well, just let it cool for about 2 minutes before you slice into it.
Notes & Tips
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1
The cast iron is key here for that deep-dish crunch.
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2
Sourdough discard gives it a lovely tang without needing to wait for dough to rise.
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3
Don't overwork the dough; just get it smooth and in the pan.
Tools You'll Need
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1 cast iron skillet (10-inch or larger) for a perfect crust
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1 small mixing bowl for the batter
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1 wooden spoon or spatula for mixing and flattening
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Oven mitts to protect your hands
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Cheese grater (optional) if you're shredding your own mozzarella
Must-Know Tips
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Dough Rest, Let the dough rest for a few minutes before cooking to keep it from collapsing.
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Extra Crunch, Sprinkle in 1/4 teaspoon of baking powder if you want an even crispier base.
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Oil Temperature, Make sure the oil shimmers before adding dough to avoid sticking.
Professional Secrets
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The high heat of 475°F combined with cast iron mimics a professional pizza oven.
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Using a thin layer of oil in the pan essentially fries the bottom of the crust.
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Adding a pinch of salt to the discard balances the natural acidity of the sourdough.
What readers are saying
Community reviews from home cooks like you
Decent result for the effort. The discard flavor was nice, but next time i'll double the sauce. I might try it again with some adjustments.
I wanted to love this dish, but it didn't quite work for me. I found it a bit sweet for my taste. I think with some tweaks it could be really good.
Can't believe how simple this was. I really liked how the 1 cup sourdough discard and 1 tablespoon extra-virgin olive oil came together. Perfect as written.
Will definitely make this again. I really liked how the 1 cup sourdough discard and 1 tablespoon extra-virgin olive oil came together. Already shared it with a friend.
It was okay, with a few tweaks. The discard flavor was nice, but next time i'll double the sauce. I might try it again with some adjustments.
I was surprised how good this turned out. I really liked how the 1 cup sourdough discard and 1 tablespoon extra-virgin olive oil came together. Thanks for sharing this one!
The flavors were spot on. I really liked how the 1 cup sourdough discard and 1 tablespoon extra-virgin olive oil came together. The texture was a touch off, but the flavor saved it. Thanks for sharing this one!
Can't believe how simple this was. I really liked how the 1 cup sourdough discard and 1 tablespoon extra-virgin olive oil came together. Perfect as written.
This exceeded my expectations. I really liked how the 1 cup sourdough discard and 1 tablespoon extra-virgin olive oil came together. Thanks for sharing this one!
This exceeded my expectations. I really liked how the 1 cup sourdough discard and 1 tablespoon extra-virgin olive oil came together. Saving this for later.
I wanted to love this dish, but it didn't quite work for me. Next time I'll double the sauce. I think with some tweaks it could be really good.
I wanted to love this dish, but it didn't quite work for me. My oven needed an extra 5 minutes. I think with some tweaks it could be really good.
I wanted to love this dish, but it didn't quite work for me. Next time I'll double the sauce. I think with some tweaks it could be really good.
The flavors were spot on. I really liked how the 1 cup sourdough discard and 1 tablespoon extra-virgin olive oil came together. Will be making this regularly.
Nice base recipe. The discard flavor was nice, but i would reduce the salt a little. I might try it again with some adjustments.
My new favorite way to make Easiest Sourdough Discard Cast Iron Pizza – Super Crunchy. I really liked how the 1 cup sourdough discard and 1 tablespoon extra-virgin olive oil came together. Will be making this regularly.
Recipe by
Sofia RiveraExploring the world through food 🌍🍲 Rich flavors, exciting dishes, and endless culinary inspiration ✨
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