Some evenings, you open the fridge, look at what is left over from the week, and just want something real on the table without a big production. No elaborate planning, no long ingredient lists, no dough sitting on the counter for hours. This recipe was born out of exactly that kind of evening, and it has become one of the most reliable things in my kitchen rotation. If you keep a sourdough starter, you already have everything you need to make a pizza that is genuinely delicious, with a crust that has real character and flavor, in under thirty minutes.

Why This Recipe Became My Go-To Weeknight Dinner

There is something deeply satisfying about a meal that asks very little of you and still delivers something worth sitting down for. This cast iron sourdough discard pizza is that meal for me. I did not set out to create a recipe. I just had discard in the jar, a cast iron skillet on the stove, and a handful of toppings that needed to be used. What came out of the oven surprised me. The base was crispy on the bottom, soft and a little chewy in the middle, and it had that gentle tang that only sourdough can give. I made it again the next week. Then the week after that. At some point it stopped being an experiment and started being the thing I reach for whenever I need dinner to come together fast without compromising on taste. If you have ever looked at your sourdough discard and wondered whether it could do more than pancakes and crackers, this is your answer.

What Makes Sourdough Discard Perfect for Pizza Dough

Sourdough discard is the portion of your starter that you remove before each feeding. Most people think of it as waste, something to get rid of before refreshing the starter. But discard is actually a wonderfully versatile ingredient, and pizza is one of the best uses for it. Here is why it works so well in this recipe. Discard already contains a blend of flour and water that has been fermenting, even if slowly. That fermentation gives it a mild acidity that translates directly into flavor in your crust. You are not starting from zero the way you would with plain flour and water. You are starting with something that already has depth. Because discard is thinner than a fed starter and pourable at the right hydration, it spreads naturally across a hot cast iron pan without any kneading or shaping. You simply pour it in, tilt the pan gently to distribute it, and let the heat do the rest. There is no yeast to add, no proofing time required, and no special technique involved. The discard firms up beautifully in a hot oven, giving you a base with a golden, slightly crispy bottom and a tender interior that holds up to toppings without getting soggy. It is honestly one of the most forgiving things you can make with discard, and one of the most impressive in terms of results for the effort involved.

What You Will Need

For the discard base you will need one cup of sourdough discard at roughly one hundred percent hydration, which means equal parts flour and water by weight. You will also need two tablespoons of olive oil, half a teaspoon of salt, half a teaspoon of garlic powder, and a pinch of dried oregano if you like a little extra flavor built into the crust itself. For the sauce, a simple marinara or crushed tomato works perfectly. You do not need anything fancy. A few spoonfuls spread thin across the base is all it takes. For toppings, the beauty of this recipe is that it is built for whatever you have on hand. In the version pictured here, I used sliced black olives, thin rings of red onion, sliced mushrooms, pepperoni, and shredded mozzarella. That combination came together from what was already in the fridge, and it worked beautifully. But you could just as easily use roasted bell peppers, fresh basil, Italian sausage, sun-dried tomatoes, or any cheese you have available. The recipe is genuinely flexible and forgiving, which is a big part of why it works so well for busy weeknights.

The Equipment: Why Cast Iron Makes All the Difference

You could make this pizza in a regular oven-safe skillet, and it would be fine. But if you have a cast iron pan, use it here. Cast iron is exceptional at holding and distributing heat evenly, and that quality is exactly what this recipe depends on. When you preheat a cast iron skillet in the oven before adding the discard, the pan is already blazing hot when the batter hits it. That immediate contact with intense heat is what creates the crispy bottom crust. The edges start to set almost instantly, and the base develops a golden, slightly crunchy layer underneath while the inside stays tender. A regular pan simply does not retain heat the same way, and you may end up with a softer, less defined crust. A twelve-inch cast iron skillet is the ideal size for this recipe. It gives you a pizza that is substantial enough to serve two people comfortably as a main, or four people as a lighter meal or appetizer. Cast iron is also naturally non-stick when properly seasoned, which means the pizza releases cleanly after baking and you get those beautiful caramelized edges without anything sticking to the pan.

How to Make It: Step by Step

Start by placing your cast iron skillet in the oven and preheating to 450 degrees Fahrenheit. You want the pan to be fully hot before the discard goes in, so give it at least ten to fifteen minutes to come up to temperature along with the oven. While the oven heats, mix your discard with the olive oil, salt, garlic powder, and oregano in a bowl and stir until everything is combined. The batter should be pourable but not watery. If your discard is very thick, you can add a tablespoon or two of water to loosen it slightly. When the oven is ready, carefully remove the hot skillet using oven mitts and set it on a heat-safe surface. Drizzle a little extra olive oil into the pan and swirl to coat the bottom and sides. Pour the discard batter into the center of the pan and tilt it gently so it spreads out toward the edges. It does not need to reach all the way to the sides. A slight gap is fine and actually gives you those wonderful crispy rim edges. Slide the pan back into the oven and bake for ten minutes, until the base is set and just beginning to turn golden. Pull it out and spread your sauce across the surface, leaving a small border around the edge. Add your toppings in whatever combination you like, then layer the mozzarella over everything. Return the pan to the oven and switch on the broiler. Broil for three to five minutes, watching closely, until the cheese is melted, bubbling, and beginning to brown in spots. Remove from the oven, let it rest for two minutes, then slice and serve directly from the pan.

Topping Ideas to Make It Your Own

One of the best things about this recipe is that it really does work with almost anything. The discard crust is sturdy enough to hold generous toppings but neutral enough in flavor to complement a wide range of combinations. If you want to keep it classic, a simple margherita style with marinara, fresh mozzarella, and basil leaves added after baking is hard to beat. For something a little heartier, try Italian sausage crumbled and pre-cooked with roasted red peppers and provolone. If you are leaning into vegetables, caramelized onions, zucchini, and goat cheese make a beautiful combination. A white pizza version works wonderfully too. Skip the tomato sauce and brush the base with olive oil and minced garlic, then top with ricotta, spinach, and a generous handful of mozzarella. For a smoky and savory option, try bacon, sliced jalapeños, and cheddar for something a little outside the traditional pizza lane but genuinely satisfying. The point is that this crust is your canvas. Whatever combination sounds good to you, or more practically, whatever combination uses up what is already in your fridge, is the right answer.

Tips for the Best Result Every Time

Getting the pan fully hot before adding the batter makes a significant difference. Do not skip the preheating step or rush it. A cold or lukewarm pan will not give you that crispy bottom, and the whole texture of the crust will be different. Your discard should be at room temperature when you use it. Cold discard straight from the fridge can be poured into the mix, but it will affect how quickly the batter sets in the oven. Give it thirty minutes on the counter if you can. The thickness of your batter matters too. If your discard is very stiff and thick, the crust will be dense and may not spread evenly. If it is very thin and runny, it may spread too much and bake up too flat. Aim for a consistency similar to a thick pancake batter. Spread your sauce thin. This is not a deep dish pizza, and a heavy layer of sauce will make the base soggy and prevent the crust from crisping properly. A light, even layer is plenty. Watch your broiler carefully in those final minutes. Broilers vary significantly from oven to oven, and the cheese can go from perfectly melted to burnt in less than a minute if you are not paying attention. Stay close to the oven during that last step. Let the pizza rest for a couple of minutes before slicing. It firms up slightly as it cools and slices much more cleanly. Cutting into it the second it comes out of the oven will cause the toppings to slide and the cheese to pull away unevenly.

FAQ

Can I use fed starter instead of discard? Yes, you can, though the flavor will be slightly different. Discard has a more pronounced tang because it has not been refreshed recently. A freshly fed starter will give you a milder, slightly less complex flavor in the crust. Both work perfectly fine in terms of texture and structure.

My discard has been in the fridge for two weeks. Is it still okay to use? Generally yes, as long as it does not smell off or show any signs of mold. Older discard will have a more sour, pungent flavor which some people love in a pizza crust. If you are unsure, give it a smell. If it smells pleasantly sour and fermented rather than rotten, it is fine to use.

Can I make this without a cast iron skillet? You can use any oven-safe skillet or even a round cake pan. The result will be slightly different in terms of crust crispiness, but it will still taste good. Avoid non-stick pans under a broiler as many are not rated for broiler temperatures.

Can I make the batter ahead of time? Yes. You can mix the discard with the olive oil and seasonings up to a day in advance and keep it covered in the fridge. Bring it back to room temperature before baking.

How do I store leftovers? Let slices cool completely, then store them in an airtight container in the fridge for up to three days. Reheat in a skillet over medium heat for a few minutes to bring the crispiness back. Avoid microwaving if you can, as it softens the crust considerably.

Conclusion

This sourdough discard cast iron pizza is the kind of recipe that earns a permanent place in your weekly routine. It is quick, flexible, deeply satisfying, and it makes wonderful use of something that most people pour down the drain. Once you try it, you will start looking at your discard jar differently. It is not a byproduct of maintaining your starter. It is the beginning of dinner. As always, I hope this helps someone. — Danica Recipes

Sourdough Discard Cast Iron Pizza (No Knead, No Proof, No Stress)

Author: Danica
Total Time: 38 to 40 minutes
Yield: 1 pizza, serves 2 as a main or 4 as a light meal 1x
Diet: Vegetarian

Print Recipe

Description

A no-knead, no-proof sourdough discard pizza made in a cast iron skillet. Crispy on the bottom, chewy in the middle, and topped with olives, red onion, mushrooms, pepperoni, and mozzarella. Ready in under 30 minutes with ingredients you already have.

Ingredients

Scale

For the crust:

1 cup sourdough discard (100% hydration, room temperature)
2 tablespoons olive oil (plus a little extra for the pan)
1/2 teaspoon salt
1/2 teaspoon garlic powder
1/4 teaspoon dried oregano

For the toppings:

3 to 4 tablespoons marinara or crushed tomato sauce
1/2 cup shredded mozzarella cheese
1/4 cup sliced black olives
1/4 cup sliced mushrooms
1/4 small red onion, thinly sliced into rings
8 to 10 slices pepperoni

Instructions

Place your 12-inch cast iron skillet in the oven and preheat to 450 degrees Fahrenheit. Allow the pan to heat for at least 15 minutes.
While the oven preheats, combine the sourdough discard, olive oil, salt, garlic powder, and oregano in a mixing bowl. Stir until fully combined. The batter should resemble thick pancake batter. Add a tablespoon of water if it is too stiff.
Carefully remove the hot skillet from the oven using oven mitts. Drizzle a small amount of olive oil into the pan and swirl to coat the bottom and sides.
Pour the batter into the center of the pan and tilt gently to spread it toward the edges. A small gap at the rim is fine.
Return the pan to the oven and bake for 10 minutes, until the base is set and lightly golden.
Remove the pan and spread a thin layer of marinara sauce over the surface, leaving a small border around the edge.
Add the mushrooms, olives, red onion, and pepperoni evenly across the sauce. Top with shredded mozzarella.
Return to the oven and switch to broil. Broil for 3 to 5 minutes, watching closely, until the cheese is melted and bubbling with light golden spots.
Remove from the oven and rest for 2 minutes before slicing. Serve directly from the skillet.

Notes

Use discard at room temperature for the best spread and texture. Cold discard straight from the fridge will work but may affect how evenly the batter sets. Keep your sauce layer thin to avoid a soggy base. Watch the broiler closely in the final minutes as the cheese can brown very quickly. Let the pizza rest two minutes before slicing for cleaner cuts. Older discard (up to two weeks in the fridge) works well here and adds a deeper tang to the crust.

Prep Time: 10 minutes
+ Time: 15 minutes (oven and pan preheating)
Cook Time: 13 to 15 minutes
Category: Dinner, Main Course
Method: Skillet, Broil
Cuisine: American, Italian-Inspired

Nutrition

Serving Size: 2 slices (1/4 of pizza)
Calories: 380 kcal
Sugar: 3g
Sodium: 720 mg
Fat: 18 g
Saturated Fat: 6g
Unsaturated Fat: 11 g
Trans Fat: 0g
Carbohydrates: 38 g
Fiber: 2g
Protein: 15 g
Cholesterol: 35 mg

Keywords: sourdough discard pizza, cast iron pizza, no knead pizza, quick sourdough dinner, discard recipe, weeknight pizza, easy homemade pizza