Baking Steel for Sourdough Bread: Tips for a Crispy Crust and Perfect Oven Spring

Quick answer

To get a crispy crust and perfect oven spring with sourdough on a baking steel, preheat the steel for at least 45–60 minutes at 500°F (260°C), use steam during the first 15 minutes, and score your dough just before baking. The steel's high thermal mass delivers intense bottom heat, mimicking a professional bread oven.

If you've been baking sourdough on a stone or tray, switching to a baking steel can transform your loaves. The steel's superior heat conductivity and thermal mass create an intense burst of heat that promotes oven spring and a deeply caramelized crust. In this guide, we'll walk you through the essential steps and tips to get the most out of your baking steel for sourdough bread.

Whether you're a beginner or a seasoned baker, understanding how to preheat, manage steam, and score properly will make the difference between a good loaf and a great one. Let's dive into the process.

Why a Baking Steel Works Wonders for Sourdough

A baking steel conducts heat 18 times faster than ceramic, which means it delivers a powerful, immediate heat to the bottom of your dough. This rapid heat transfer encourages maximum oven spring—the dramatic rise during the first few minutes of baking—and creates a crisp, blistered crust that's hard to achieve with other baking surfaces.

The original Baking Steel® is a 1/4-inch-thick, 15-pound slab of solid carbon steel that turns your home oven into a high-heat pizza oven. But it's not just for pizza; its ability to retain and radiate heat makes it an excellent choice for bread baking. The steel's pre-seasoned surface also provides a non-stick base, so your loaves release easily.

• For larger loaves or multiple loaves, consider the Baking Steel Pro, which is 50% thicker and offers even more thermal mass.



• Always preheat the steel for at least 45–60 minutes to ensure it's fully saturated with heat.

Step-by-Step: Baking Sourdough on a Baking Steel

Start by placing your baking steel on the middle rack of your oven. Preheat the oven to 500°F (260°C) for at least 45–60 minutes. This long preheat ensures the steel is thoroughly heated, providing the intense bottom heat needed for a great crust.

While the oven heats, prepare your sourdough for baking. Shape your loaf and let it proof until it's ready. Just before baking, score the dough with a sharp blade or lame to control where it expands. Then, carefully transfer the dough to the hot steel using a peel or a piece of parchment paper.

To create steam, place a shallow pan with water on the bottom rack or spray the oven walls with water right after placing the dough. Steam keeps the crust soft during the first part of baking, allowing maximum oven spring. After 15 minutes, remove the steam source and continue baking until the crust is deep golden brown.

• Use a pizza peel dusted with semolina or cornmeal to slide the dough onto the steel easily.
• If you have a baking steel with a larger surface, like the Baking Steel Pro, you can bake two loaves at once.

Tips for a Crispy Crust and Perfect Oven Spring

For an extra crispy crust, consider turning off the oven and leaving the bread inside with the door slightly ajar for the last 5–10 minutes. This allows excess moisture to escape, crisping the crust without over-baking the interior.

Another tip is to let your dough come to room temperature before baking. Cold dough can shock the steel and reduce oven spring. Aim for a final proof at room temperature for at least 30–60 minutes before baking.

• Score your dough at a 45-degree angle to create an 'ear' that opens up beautifully.
• Don't open the oven door during the first 15 minutes of baking—this lets out steam and can ruin the spring.

Step-by-Step Baking Process

1. Step 1: Preheat the Steel: Place the baking steel on the middle rack and preheat your oven to 500°F (260°C) for 45–60 minutes. This ensures the steel is fully heated for maximum oven spring. Checkpoint: The steel should be smoking hot—you can test by flicking a drop of water; it should sizzle and evaporate instantly.
2. Step 2: Shape and Proof Your Dough: Shape your sourdough and let it proof until it passes the poke test—the dough should spring back slowly, leaving a slight indentation. Avoid over-proofing, which can cause flat loaves. Checkpoint: If the dough springs back immediately, it's under-proofed; if it doesn't spring back at all, it's over-proofed.
3. Step 3: Score the Dough: Just before baking, score the dough with a sharp blade or lame. Make deep, angled cuts to allow the dough to expand and create an 'ear'. Mistake to avoid: Scoring too shallowly can restrict expansion, leading to a dense loaf.
4. Step 4: Transfer to the Steel: Carefully slide the dough onto the hot steel using a peel or parchment paper. Work quickly to retain heat. Mistake to avoid: If the dough sticks to the peel, it can cause a messy transfer. Use semolina or cornmeal to prevent sticking.
5. Step 5: Add Steam: Place a pan of water on the bottom rack or spray the oven walls with water immediately after loading the dough. Steam keeps the crust soft for the first 15 minutes, promoting oven spring. Checkpoint: After 15 minutes, remove the steam source to allow the crust to brown and crisp.
6. Step 6: Bake and Cool: Bake for 25–35 minutes total, until the crust is deep golden brown and the internal temperature reaches 200–210°F (93–99°C). Cool on a wire rack for at least 1 hour before slicing. Mistake to avoid: Slicing too early can result in a gummy texture. Patience is key!

Baking Steel Products for Sourdough

• Baking Steel® Original — 1/4" Thick Pizza Steel: The Original arrives pre-seasoned and ready to use, a 1/4-inch-thick, 15-pound slab of solid carbon steel that turns your home oven into a high-heat pizza oven. Steel conducts heat 18x faster than ceramic. This is the go-to choice for sourdough bakers who want a reliable, high-performance baking surface that delivers excellent crust and oven spring without the need for extra seasoning.
• Baking Steel Pro: The Baking Steel Pro (16" x 16" x 3/8") is a 27-pound slab of solid carbon steel, 50% thicker than the Original, delivering maximum thermal mass and superior heat retention. If you bake large or multiple loaves, the Pro's extra thickness provides even more consistent heat, reducing the risk of under-baked centers and ensuring a perfectly crispy crust every time.

With these tips, you'll be able to bake sourdough bread with a crispy, crackling crust and beautiful oven spring right in your home oven. Ready to elevate your bread game? Check out the Baking Steel® Original to get started, or explore the Baking Steel Pro for even more thermal mass. Happy baking!