Baking

Perfectly Flaky Pie Crust: The Science of Butter, Layers, and Temperature

Master the science of flaky pie crust: learn how controlling butter temperature below 60°F and generating steam pockets creates delicate, tender pastry layers.

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A perfect pie starts long before you add the filling. Whether you're making a sweet pie, savory pie, or even a rustic galette, you want the same thing from the crust: buttery, tender, and lots of flaky layers.

And pie crust has a reputation for being a little fussy, but it really comes down to two things:

Keep it cold. Weigh your ingredients.

Temperature matters through pretty much the entire process. You want your butter to stay cold enough to hold its shape while you mix and roll the dough, and you don't want to overwork the dough and develop too much gluten.

Weight matters for the same reason. Pie dough is a ratio of flour, fat, and water, and a measuring cup leaves a surprising amount of room for error. A scale doesn't.

We're using Gravitas™ Precision Kitchen Scale to weigh everything and Thermapen® NANO to keep an eye on temperature along the way.

The Secret to Flaky Pie Crust? Keep Your Butter Cold.

Those flaky layers in a good pie crust come from pieces of butter trapped throughout the dough.

When the crust hits a hot oven, the water in the butter and dough turns to steam. That steam helps separate the layers of dough while the fat keeps them from sticking back together. That's where all those crispy, flaky layers come from.

But for that to work, your butter needs to stay cold.

Cold butter + hot oven = flaky pie crust.

If the butter gets too warm while you're mixing or rolling, it starts smearing into the flour instead of staying in separate pieces. That's when you start losing those layers.

And if you notice your butter getting soft, don't try to fix it by adding more flour. Just stop.

Put the whole thing in the fridge for a few minutes and come back to it when it's cold again.

Weigh Your Ingredients

This recipe calls for 202 grams of all-purpose flour and 141 grams of butter.

We're weighing both with Gravitas Precision Kitchen Scale instead of using measuring cups because flour is incredibly easy to overmeasure.

Scoop your flour straight out of the bag with a measuring cup and you'll probably get a different amount than if you spooned it into the cup and leveled it. With a scale, 202 grams is 202 grams every time.

That matters here because adding extra flour changes how much water your dough needs, which changes how the entire dough comes together.

If we're going through the trouble of making pie crust from scratch, we might as well make it repeatable.

Start Cold and Stay Cold

Claire Saffitz's pie crust starts with 141 grams of chilled butter cut into 1/2-inch pieces, plus ice water.

Before you get started, use Thermapen NANO to spot-check your butter and water. Your water should be very cold, right around the freezing point, and your butter should feel cold and firm.

Then work quickly.

Toss the butter cubes through the flour and use your fingertips to smash them until the largest pieces are about chickpea-sized.

And don't worry about making it look perfect. You actually want to see pieces of butter throughout the flour. That's what is going to give us those flaky layers later.

Your hands are one of the biggest heat sources in this whole process, so this isn't the time to keep messing with the dough until it looks pretty.

If your kitchen is warm or the butter starts feeling soft or greasy, stop and put everything in the fridge for a few minutes.

You can always make the dough colder. It's a lot harder to put melted butter back together.

Why You Don't Want to Overwork Pie Dough

Cold butter is only half of what we're paying attention to here. The other half is gluten.

Once you add water to flour, proteins in the flour start forming gluten. That's great when you're making bread and want strength, elasticity, and chew.

We don't want chewy pie crust.

We need enough gluten to give the crust structure and hold everything together, but not so much that it becomes tough.

That's why we're not kneading this dough.

Once the ice water goes in, stir until everything looks clumpy and uneven. Turn it out onto your work surface, then use a bench scraper to chop, toss, and push the mixture together.

It doesn't need to be smooth. It doesn't need to look perfect.

Honestly, if your pie dough looks a little rough at this point, you're probably doing it right.

Weigh Your Water, Too

The original recipe calls for 1/3 cup, or 80 milliliters, of ice water.

Since 1 milliliter of water weighs almost exactly 1 gram, we can skip the measuring cup and weigh 80 grams of water directly on Gravitas.

Now we know exactly how much water we're adding, but we also want to know how cold it is.

Use Thermapen NANO to check that your water is under 36°F before adding it to the flour.

Once the water goes in, things start moving pretty quickly. The flour starts hydrating and developing gluten, while your hands, countertop, and kitchen are all working against you by warming up the butter.

So get it mixed, get it together, and don't mess with it any longer than you need to.

The Step That Makes This Crust So Flaky

This is probably my favorite part of this method.

Instead of forming the dough into a disk and immediately throwing it into the fridge, we're going to build some layers first.

Once the dough has come together, pat it into a square and roll it until it's about 1/2-inch thick.

Cut that square into four pieces.

Then stack all four pieces on top of each other.

Each piece already has flattened pieces of cold butter running through it. When we stack them, we're stacking all of those layers of dough and butter on top of one another.

It's basically a very quick, very easy version of lamination—and it's going to give us even more flaky layers once the crust hits the oven.

Chill. And Don't Rush It.

Once the dough is stacked, shape it into a disk and wrap it tightly.

Claire's technique has you roll over the wrapped dough with a rolling pin, which helps compact everything and fill out the wrap. It also makes the dough a little easier to roll later without the edges immediately cracking apart.

Then it goes into the refrigerator for at least two hours.

And yes, you really do need to wait.

That time gives the butter a chance to get completely cold again and allows the flour to fully hydrate while the dough rests.

You've spent this entire process keeping your butter cold and building layers.

Don't rush the last step and undo all that work.

I’d also keep that “Cold butter + hot oven = flaky pie crust” line. That sounds like ThermoWorks and like you. The bigger change is letting some sections be simple instead of giving every scientific point a polished “marketing conclusion.” That’s where the original starts feeling generated.

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Claire Saffitz-Inspired Flaky Pie Crust

Megan Benson

Our method follows Claire Saffitz's technique for creating a flaky pie crust through cold butter, minimal handling, and stacking the dough to create layers.

Ingredients

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202 g (1 1/2 cups) all-purpose flour
1 tablespoon sugar
1 teaspoon Diamond Crystal kosher salt or 1/2 teaspoon Morton kosher salt
141 g (10 tablespoons) unsalted butter, cut into 1/2-inch pieces and chilled
120 g (1/2 cup) ice water, for chilling and measuring from

Directions

Place your mixing bowl on your Gravitas Precision Kitchen Scale and tare the scale to zero.
Weigh 202 grams of flour into the bowl. Add the sugar and salt and combine.
Weigh 141 grams of chilled butter and cut it into 1/2-inch pieces.
Add the chilled butter to the dry ingredients and toss until every piece is coated in flour.
Working quickly with your fingertips, smash and flatten the butter pieces. Stop while you still have distinct pieces of butter throughout the flour, with the largest around the size of a chickpea.
Make a well in the center.
Using Gravitas, measure 80 grams of your ice-cold water, leaving the ice behind. Use Thermapen NANO to verify that the water is still very cold before adding it to the dough.
Pour the water into the well and use a fork to distribute it through the flour. The mixture should be clumpy with some dry areas remaining.
Turn everything onto a clean work surface.
Using a bench scraper, chop through the mixture, then toss and gather it back into a pile. Repeat until there is no loose flour left on the work surface and the largest pieces are roughly pea-sized.
Gather the dough into a square and firmly pat it together. With a floured rolling pin, roll it in both directions until it's approximately 1/2-inch thick.
Square the edges, then cut the dough into four equal sections.
Stack the four pieces on top of one another, placing any loose pieces between the layers.
Flatten the stack into a disk approximately 3/4-inch thick, using a little flour as necessary to prevent sticking.
Check the temperature of the dough with Thermapen NANO. If the butter has softened or the dough feels warm, give it time in the refrigerator before continuing.
Wrap the disk tightly in plastic or reusable food wrap. Roll over the wrapped dough with your rolling pin to compact it and create an even disk.
Refrigerate until completely cold and firm, at least 2 hours, before rolling and using according to your pie or galette recipe.

FAQ

Absolutely. Pie dough can be made ahead and refrigerated for up to 3 days. For longer storage, wrap the dough tightly and freeze it for up to 2 months. Transfer frozen dough to the refrigerator and allow it to thaw overnight before rolling.

Yes. This dough works beautifully for both. Use it for fruit pies, pumpkin or other custard pies, galettes, hand pies, savory tarts, or pot pies. For a savory application, you can also reduce or omit the tablespoon of sugar depending on the recipe.

A measuring cup tells you how much space an ingredient occupies. A scale tells you how much of that ingredient you actually have. For pie dough, where small differences in flour and water can change the texture of the dough, weighing ingredients gives you a much more consistent starting point every time.

Cracking can happen when the dough is too cold, hasn't rested long enough, or is too dry. If your refrigerated dough is rock-hard, give it a few minutes at room temperature before rolling. You want the butter to remain cold, but the dough needs to be pliable enough to roll without breaking apart.

Stop working the dough and put it back in the refrigerator. Don't try to fix warm, sticky dough by continually adding flour. Extra flour changes the ratios of the recipe and can leave you with a dry, tough crust. Cool the dough until the butter firms back up, then continue where you left off.