Sourdough Peach Cobbler Cookies

There is nothing quite like the joys of fresh peach season in the kitchen, and the summer nostalgia of a warm peach cobbler is simply unbeatable. But sometimes, you want a handheld treat that’s easy to bring to parties and picnics. This is why I had to create these Sourdough Peach Cobbler Cookies! They truly are the perfect way to capture that nostalgia in every bite. With a thick and chewy spiced cookie base, the sourdough that balances the bright and fresh peach filling, and a buttery cinnamon streusel on top, they bring all those cozy, old-fashioned flavors into a gourmet cookie perfect for sun-drenched summer afternoons.

Essentials for the Perfect Sourdough Cookie

• Digital Kitchen Scale: In my kitchen, a digital scale is a non-negotiable! I have had this exact digital scale for years, and it has never failed me! Measuring by weight is the only foolproof way to ensure accuracy, especially for flour and sourdough starter which are often difficult to measure and can make or break the final texture of the cookies.
• Stand Mixer: A quality stand mixer is a game changer for sourdough cookies. It helps combine the thick dough with ease without over-mixing, which is key for a tender crumb!
• Large Cookie Scoop: Most of my sourdough cookie recipes are designed for making jumbo cookies. Using a large cookie scoop ensures that you get the bakery-style size with even baking every time!

Ingredients

Peach Filling Ingredients

• 1 tbsp salted butter (14g): I use salted butter so that the salt is already evenly distributed. If you want to use unsalted butter, add the tiniest pinch of additional salt to the filling.
• 3 cups peeled and diced fresh peaches (525g): This is approximately 3-4 peaches. I do not recommend canned peaches for this sourdough peach cobbler cookies recipe due to the higher moisture content. If you must use canned peaches, be sure to drain them thoroughly, and it may take longer to reduce the filling down to the desired consistency.
• 6 tbsp light brown sugar, packed (82g): Make sure you pack it tight! The brown sugar gives the most beautiful caramel color and flavor to the peach filling.
• 1 tsp lemon juice (5g): The lemon juice can be fresh or bottled!
• ¾ tsp ground cinnamon (2g): Be sure to measure this instead of eyeballing it. This is the perfect amount of cinnamon to spice up the entire filling without overpowering the beautiful peach flavors.
• Pinch ground nutmeg: Just a smidge helps to balance the other flavors out!
• Pinch salt: I use a quality sea salt to avoid the metallic flavors often found in iodized table salts.
• 2 tbsp cornstarch (16g): Cornstarch is the simplest way to thicken the peach juices into a thick jam-like consistency for these sourdough peach cobbler cookies.
• 1½ tbsp water (23g): This is used for making the cornstarch slurry before adding it to the sauce to thicken it.

Sourdough Cookie Ingredients

• 1 cup light brown sugar, packed (220g): Make sure you pack it tight! The right amount of sugar gives the cookies the perfect amount of spread while keeping them chewy.
• 2 tbsp granulated sugar (25g): Including white sugar will help balance the moisture from the brown sugar, ensuring the cookies spread just the right amount.
• ½ cup salted butter, softened (113g): The perfect softness of the butter is “dent soft”, meaning it will indent somewhat easily when the corner is pressed with your finger, but still offers some resistance and is not completely room temperature yet. Depending on the temperature of your home, the perfect softness can take anywhere from 30-60 minutes at room temperature. If you want to use unsalted butter, add ¼ tsp. additional salt to the recipe.
• ½ cup sourdough starter, active or discard, stirred down (150g): The sourdough starter can be active or discard starter! Be sure to stir the starter down before measuring. Or for best accuracy, measure by weight.
• 2 large egg yolks (40g): Having room temperature yolks is ideal, but cold yolks are fine too!
• 2 tsp vanilla extract (10g): Pure vanilla extract is best! Imitation vanilla often contains unnecessary additives.
• 2 tsp ground cinnamon (5g): Don’t skip the cinnamon! This is what gives the cookies the perfect warmly spiced base for the peach filling.
• ½ tsp salt (3g): I prefer to use sea salt, as iodized salt may add an unwanted flavor profile.
• 1½ cups all-purpose flour, scooped directly from bag (not spooned and leveled) (235g): It’s very difficult to accurately measure flour by volume. This is because it is all dependent on how you scoop it! For ease of measuring, I designed this volume measurement to simply be scooped directly out of the bag (not spooned and leveled). Pro Tip: For the best accuracy and best overall cookie texture, you should measure flour by weight.
• 1 tsp baking soda (6g): Ensure you are using baking soda, NOT baking powder. They are not interchangeable and will affect the spread and texture of the cookie.

Cinnamon Streusel Ingredients

• ¼ cup all-purpose flour, scooped directly from bag (not spooned and leveled) (40g): Using an all-purpose flour in the streusel gives the crumbly topping that classic cobbler-like look and flavor!
• 3 tbsp light brown sugar, packed (41g): Using brown sugar helps the streusel to caramelize just like a classic old-fashioned cobbler topping.
• ½ tsp ground cinnamon (1g): The cinnamon warms the flavor of the topping and pairs beautifully with the brown sugar.
• 2 tbsp salted butter, melted (28g): I use salted butter because the salt is already distributed. If you want to use unsalted butter, add a tiny pinch of additional salt to the recipe.

Optional Finishing Touches

• Drizzle finished cookies with a bit of my soft-set Simple Cookie Glaze. I recommend making a half batch or even a quarter batch for just a light drizzle.
• Or alternatively, top each cookie with a small spoon of vanilla bean ice cream just before serving (highly recommended for warm cookies!)

How to Make Sourdough Peach Cobbler Cookies

For the Peach Filling

Simmer Peaches: Melt the butter in a medium saucepan over medium heat. You may optionally brown the butter at this stage for more depth of flavor. Then, add the diced peaches, brown sugar, lemon juice, cinnamon, nutmeg, and salt. Allow to simmer, stirring often, for about 6-8 minutes, or until the liquid has reduced by about half.

Add Cornstarch Slurry: In a separate small bowl, stir together the cornstarch and water until combined. While the peach mixture is bubbling, add the slurry, and stir over medium heat until the juices have thickened and become translucent and glossy like jelly, about 60-90 seconds.

Chill Filling: Transfer the peach filling to a shallow bowl, and press parchment paper directly onto the surface of the filling. This helps to prevent a skin from forming while it cools down. Chill in the fridge until you’re ready to assemble the cookies.

For the Sourdough Cookies

Preheat Oven & Prep: Preheat oven to 350°F (175°C). Line baking sheet with parchment paper.

Cream the Butter & Sugar: Start by beating the brown sugar and softened butter together. This works best with an electric mixer (either handheld or a stand mixer). You are looking for more than just a mix here, you want the texture to change. It should look creamy, uniform, and slightly aerated. If you see chunks of butter, keep mixing!

Add the Wet Ingredients: Add your sourdough starter, egg yolks, vanilla extract, ground cinnamon, and salt. Beat until it becomes smooth and slightly frothy. Tip: Make sure to scrape down the sides of the bowl with a spatula to ensure the starter is fully incorporated! You should not see any chunks floating around by this point.

Incorporate the Dry Ingredients: Add your flour and sprinkle in the baking soda. Turn your mixer to low speed, and stir until just combined. Critical Step: Stop mixing when you still see a few tiny streaks of flour left. If you over-mix at this stage, you will accidentally over-develop the gluten and your cookies will be tough rather than soft and chewy.

Scoop: Use a large cookie scoop to place 6 generous portions of dough (3 tbsp each) onto your parchment-lined baking sheet. Ensure even spacing between each to allow for spreading. This recipe makes about 12 cookies total.

Bake & Press: Bake for 12–16 minutes, rotating the pan halfway through. You’ll know they are done when the edges look slightly crisp, but the center looks mostly set but still soft. Once removed from oven, immediately press the back of a spoon into the cookie to create a wide, shallow well for the filling to be added to in a later step.

Cool On Baking Sheet: Let the cookies sit on the hot baking sheet for right around 7 minutes before transferring them to a cooling rack. This is a crucial step for ensuring that the cookies set up completely. If you try to move them too soon, they will fall apart.

For the Cinnamon Streusel

Preheat Oven & Prep: Preheat oven to 350°F (175°C). Line baking pan with parchment paper.

Combine Ingredients: In a small bowl, thoroughly combine the flour, brown sugar, and ground cinnamon. Then, drizzle melted butter over the top, and fluff with a fork to combine. Mixture should be crumbly!

Bake: Spread mixture onto prepared pan. Bake for 12-14 minutes, rotating the pan halfway through baking. The streusel should be a light golden brown on the edges when it is done.

To Assemble the Cookies

Assemble Cookies: Spoon approximately 2 tbsp peach filling in the center indentation of each cookie. Sprinkle each one with a bit of crumbled cinnamon streusel topping. Add optional finishes below if desired. Note: If you want to serve the cookies warm, then you may assemble them immediately but they must be served immediately. Otherwise, all ingredients need to come to room temperature (or fully chilled in the fridge) before assembling, to prevent warm fillings from crumbling the cookie.

Add Optional Finishing Touches: You may optionally drizzle cookies with a bit of my Simple Cookie Glaze (just a light drizzle is approximately ¼ of a full glaze recipe). Or, try adding a spoon of vanilla bean ice cream over warm cookies just before serving!

How to Store Sourdough Peach Cobbler Cookies

• Storing Assembled Cookies: The peach filling requires refrigeration due to the fresh fruit filling. Once cookies have been assembled, they must be stored in the fridge, where they store best in a single layer for up to 5 days.
• Storing Separately: Unassembled cookies can be stored as follows. Both the baked sourdough cookies and baked streusel are safe at room temperature in an airtight bag or container for up to 5 days. The peach filling however, must be stored in the refrigerator, where it is safe for up to 5 days.

Prep Ahead Tips

These cookies are delicious and worth every step that they take, but preparing them on the same day as a party might prove difficult if you have other things going on! Follow these tips to prepare what you can ahead of time, so you can serve them in no time without a messy kitchen on the day of a party!

• The Filling (up to 5 days ahead): The filling is the easiest thing to prep ahead of time. It is safe in the fridge for up to 5 days, so you can easily prep the filling up to 5 days in advance.
• The Cookie Dough (up to 3 days ahead): Even if you want to bake the cookies day-of, the dough can be prepped and stored in the fridge for up to 3 days in advance. Note that this provides long-fermentation benefits as well, though the flavor of the cookie will become more sour over the course of the days. See my notes below for long-fermentation steps and tips.
• Baked Cookies (up to 5 days ahead): Baked sourdough cookies can be stored at room temperature in an airtight container for up to 5 days in advance. However, the quality of the cookie may become more crumbly as the days go on. Pro Tip: You can place a slice of plain white bread in the container with the cookies to help keep them soft and fresh for longer.
• The Streusel (up to 5 days ahead): Baked streusel is the easiest thing to prep ahead of time, and it can be made up to 5 days in advance without losing quality. Store it at room temperature in an airtight container.
• Fully Assembled Cookies (1-2 days ahead): Once sourdough peach cobbler cookies have been fully assembled, they can be stored in the fridge for up to 5 days safely, though note that moisture from the filling may transfer into the cookie, causing the entire cookie to weaken over time. I recommend that assembled cookies be stored no longer than 1-2 days if the cookie presentation is a concern.

Can I freeze sourdough cookie dough?

Absolutely! For best results, follow this flash-freezing method for freezing the sourdough cookie dough:

1. Scoop dough into balls and place them on a parchment-lined baking sheet (they can be close together but not touching).
2. Place the sheet in the freezer for about 1 hour, or until the dough balls are firm to the touch.
3. Transfer dough balls into a gallon freezer bag, where they can be stored in the freezer for up to 2-3 months!

Pro Tip: Double the recipe to intentionally freeze an extra batch! This provides you with a ready-to-bake dough for the next time you want cobbler cookies. Then all you have to make is the filling!

Tips for Bake From Frozen:

• Add Time: Add 2-4 minutes to the specified baking time.
• Thaw Partially: Alternatively, allow dough to sit at room temperature for 30-60 minutes before baking. This helps achieve a texture and baking time nearly identical to a fresh batch of dough.

To Freeze Peach Filling

While this peach filling is best used fresh or refrigerated, it can be frozen for up to 3 months. However, because cornstarch is a delicate thickener, freezing can sometimes cause the filling to weep (release water) upon thawing. Therefore, freeze filling at your own risk of texture changes.

• Chill Completely in the Fridge: Before freezing filling, chill it completely in the fridge to prevent ice crystals that could break down the cornstarch bonds as it thaws.
• Freeze in Thin Layer: Instead of freezing in a bulky container, place the filling in a freezer-safe bag and freeze it as a thin layer. This helps it to thaw quickly and evenly.
• Thaw in the Fridge Overnight: Do not microwave the filling to thaw it. Instead, remove it from the freezer and place it in the fridge the night before. Let it thaw slowly and consistently in the fridge before assembling cookies!
• Stir (or Simmer Again) if Needed: If the filling becomes watery after freezing and thawing, give it a vigorous stir to help it re-incorporate and thicken again. If stirring doesn’t do the trick, you can quickly re-simmer the filling in a small saucepan for 30–60 seconds to ‘re-activate’ the cornstarch and bring back that glossy, thick finish.

How to Make Long-Fermented Sourdough Peach Cobbler Cookies

To long-ferment the dough for more flavor, gut health, and nutritional benefits, follow these simple directions:

1. Prepare: Follow the recipe directions to make the cookie dough.
2. Ferment: Cover the bowl with plastic wrap, or transfer to an airtight container. Refrigerate for 1-3 days. Note: After the first day, longer fermentation increases the health benefits, but it also intensifies the tangy flavor.
3. Bake: The dough temperature will significantly affect the final texture of your cookies. About 1 hour before baking, remove the dough from the fridge and allow it to come to room temperature before scooping the dough. This will yield a texture result that is very similar to freshly-made dough.
   

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