Flaky Sourdough Discard Pie Crust Recipe

Sourdough Discard Pie Crust is a simple, flavorful way to turn leftover sourdough discard into a buttery, flaky pie crust. The discard adds a gentle sourdough note without making the crust taste overly tangy, and the dough works beautifully with sweet or savory fillings. Use this recipe for pies, galettes, hand pies, pop tarts, or any dessert that needs a reliable homemade crust.

Why you’ll love this recipe

• This sourdough discard pie crust can be used for par-baking, blind baking, double-crust pies, galettes, hand pies, and more.
• It bakes into a buttery, flaky, tender crust that pairs well with fruit fillings, custards, cream pies, and savory fillings.
• You can make it with cold sourdough discard or active sourdough starter, so it is flexible and easy to fit into your baking schedule.
• The dough can be made ahead and stored in the refrigerator for 2-3 days or frozen for up to 3 months.
• It is a practical sourdough discard recipe when you want to avoid waste and create a dependable base for homemade desserts.

I had never thought of using sourdough discard in pie dough before, so I was curious to try it. The dough came together easily and baked up crisp, light, and flaky. It also had a lovely sourdough aroma while it was in the oven.

– Nancy

Ingredients

You only need a short list of ingredients to make this sourdough discard pie crust. For the flakiest result, keep everything as cold as possible before mixing.

• Butter: Use very cold unsalted butter. Cut it into small cubes straight from the refrigerator, then chill or freeze the cubes for at least 15 minutes before adding them to the flour. Cold butter creates steam pockets as the crust bakes, which helps produce flaky layers.
• Sourdough discard: Use unfed sourdough discard that is cold from the refrigerator. This recipe is written for a 1:1 sourdough starter, meaning the starter is fed with equal parts flour and water. If your starter has a different hydration level, the dough texture may vary slightly.
• Vinegar: Distilled white vinegar helps keep the dough tender. Apple cider vinegar can also be used if you prefer a slightly different flavor.
• Flour, salt, and sugar: All-purpose flour forms the base of the dough, salt balances the flavor, and a small amount of sugar adds just enough sweetness without turning the crust into a sweet pastry.

See the full recipe card below for exact measurements and step-by-step instructions.

Substitutions & Variations

Pie crust is a foundational recipe, so the best variations are small and practical. These swaps keep the dough dependable while allowing for a little flexibility.

• Use active sourdough starter: Active starter can be used instead of discard. Replace the sourdough discard with 200 grams of active starter and keep the rest of the recipe the same.
• Use apple cider vinegar: Swap the distilled white vinegar for apple cider vinegar if you like its subtle flavor.
• Egg wash substitute: If your final pie recipe calls for an egg wash but you do not bake with eggs, brush the crust with milk or non-dairy milk. You can also skip the wash entirely.
• Use it for sweet or savory recipes: This crust works well with fruit pies, custard pies, galettes, pop tarts, hand pies, and savory pastries such as empanadas.

How to Make Sourdough Discard Pie Crust

The key to a flaky sourdough discard pie crust is working quickly and keeping the dough cold. Avoid kneading, and stop mixing as soon as the dough comes together.

1. Step 1: Stir the sourdough discard and vinegar together in a small bowl until smooth. Place the mixture in the refrigerator until needed.

2. Step 2: Cut the cold butter into small cubes. Return it to the refrigerator or freezer while you prepare the dry ingredients.

3. Step 3: Whisk the dry ingredients together, then add the chilled butter. Use your hands, a pastry cutter, or a fork to work the butter into the flour until the mixture is coarse and the butter pieces are about pea-sized.

4. Step 4: Pour in the chilled sourdough discard mixture.

5. Step 5: Mix just until the dough looks shaggy and clumpy. Visible butter pieces are exactly what you want. Do not overmix.

6. Step 6: Gather the dough into a rough ball, divide it in half, wrap each piece in plastic wrap, and chill for at least 2 hours. To freeze, place the wrapped dough in a freezer-safe bag and freeze for up to 3 months.

7. Step 7: Roll one chilled dough disk on a lightly floured surface into a rough circle, or into the shape needed for your recipe.

8. Step 8: Transfer the dough to a pie dish or baking sheet, depending on what you are making.

9. Step 9: Trim the edges, leaving enough overhang to fold and crimp.

10. Step 10: Shape and crimp the edges. Fill or bake the crust according to your pie recipe.

Expert Baking Tips

• Keep the butter cold. Chilled butter is essential for a flaky crust. If your kitchen is warm, freeze the cubed butter briefly before mixing.
• Do not knead the dough. Pie crust is not bread dough. Gather it together gently, but avoid working it too much.
• Chill the dough before rolling. A minimum of 2 hours in the refrigerator helps hydrate the flour, firm the butter, and make the dough easier to handle.
• If the dough becomes sticky, pause. Sticky dough usually means the butter is warming. Refrigerate it for 10-15 minutes, then continue.
• Use flour lightly. A little flour prevents sticking, but too much can make the crust dry or tough.

How many crusts does this recipe make?

This recipe makes enough dough for:

• One double-crust pie
• Two single-crust pies
• Two full-size galettes
• Four mini galettes

You can also use the dough for pop tarts, hand pies, and savory pastries such as empanadas.

What should you use to mix this dough?

There are several good ways to mix pie dough. Choose the method that feels most comfortable and helps you avoid overworking the dough.

• Mix by hand: Mixing by hand lets you feel the dough and control the size of the butter pieces. It can be slightly messy, and the warmth of your hands may soften the butter, so work quickly.
• Mix with a pastry cutter: A pastry cutter keeps your hands off the butter and makes it easy to cut the butter into the flour while keeping some uneven pieces.
• Mix with a fork: A fork is a simple option if you do not have a pastry cutter. It helps combine the butter and flour without adding too much warmth.
• Mix with a food processor: A food processor is fast, but it can overwork the dough quickly. Pulse only until the mixture is coarse and stop before it becomes uniform.

How should you bake this pie crust?

Always follow the baking directions for the specific pie or dessert you are making. These general methods can help you decide how to prepare the crust.

• Par-baking: Par-baking means partially baking the crust before adding a filling that will continue baking in the oven. Prick the bottom of the crust with a fork, line it with parchment paper, add pie weights or dried beans, and bake at 425 degrees F for 10-15 minutes. The crust should look set but still pale.
• Blind-baking: Blind-baking means fully baking the crust before adding a no-bake filling. Prick the bottom with a fork, line with parchment paper, add pie weights or dried beans, and bake at 425 degrees F for 15-17 minutes, or until evenly browned.
• Double-crust pie: For a pie with both a bottom and top crust, bake at 400 degrees F for 35-40 minutes, or until the crust is golden and the filling is bubbling.

Storage

Refrigerator Storage: Make the pie dough ahead and store it in the refrigerator for up to 2-3 days. Shape each portion into a slightly flattened disk, wrap tightly in plastic wrap, and keep chilled until ready to roll.

Freezer Storage: Freeze the wrapped dough for up to 3 months. For best protection, place the plastic-wrapped dough in a freezer-safe bag before freezing.

When you are ready to use frozen dough, thaw it overnight in the refrigerator. Roll it out while it is still cold, then fill or bake according to your recipe.

Recipe FAQs

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