There’s something undeniably comforting about oatmeal cream pies. Soft, chewy oatmeal cookies spiced with cinnamon and brown sugar, sandwiched around a fluffy vanilla cream filling—they’re the kind of treat that instantly brings back childhood memories. Lunchbox desserts, after-school snacks, stolen cookies from the pantry late at night. They’re familiar, cozy, and timeless.
Now imagine taking that beloved classic and elevating it with sourdough discard.
These Sourdough Oatmeal Cream Pies keep everything you love about the original—soft texture, warm spices, creamy filling—but add a subtle tang, deeper flavor, and bakery-style complexity thanks to sourdough. The result is a cookie that’s richer, more balanced, and far more satisfying than anything store-bought.
This is the perfect recipe for using up extra sourdough discard while creating something truly special. Whether you’re an experienced sourdough baker or just looking for a new way to use discard, this recipe delivers comfort, flavor, and nostalgia in every bite.
Why Use Sourdough in Oatmeal Cream Pies?
Sourdough discard might seem like an unusual addition to cookies, but it works beautifully here.
The mild acidity of the discard:
- Enhances the warmth of cinnamon and brown sugar
- Balances sweetness so the cookies aren’t cloying
- Adds moisture for a soft, tender crumb
- Creates depth of flavor you can’t get otherwise
You don’t need active starter for this recipe—unfed sourdough discard is perfect. The goal isn’t fermentation, but flavor.
Why You’ll Love This Recipe
These sourdough oatmeal cream pies are:
- Soft and chewy, not dry or cakey
- Perfectly spiced with cinnamon and vanilla
- Balanced in sweetness thanks to sourdough
- Make-ahead friendly
- Great for freezing
- Ideal for using discard
They’re indulgent without being heavy, nostalgic without being boring, and homemade in the very best way.
Flavor and Texture Breakdown
Cookies:
Soft centers, lightly crisp edges, chewy oats, warm cinnamon, caramel notes from brown sugar, and a gentle tang from sourdough.
Cream Filling:
Fluffy, smooth, lightly sweet vanilla cream that holds its shape and complements the cookies without overpowering them.
Together, they create a dessert that’s comforting, balanced, and downright addictive.
Ingredients Overview
For the Sourdough Oatmeal Cookies
- Old-fashioned rolled oats
- All-purpose flour
- Baking soda
- Baking powder
- Salt
- Ground cinnamon
- Unsalted butter
- Brown sugar
- Granulated sugar
- Egg
- Egg yolk
- Sourdough discard
- Vanilla extract
For the Cream Filling
- Unsalted butter
- Powdered sugar
- Vanilla extract
- Heavy cream or milk
- Salt
Ingredient Notes & Tips
Oats
Use old-fashioned rolled oats, not quick oats. Rolled oats provide the chewy texture that defines oatmeal cookies.
Butter
Unsalted butter allows you to control the salt level. Make sure it’s softened, not melted.
Sugar
Brown sugar adds moisture and chew, while granulated sugar provides structure and lightness.
Egg + Egg Yolk
The extra yolk makes the cookies richer and softer.
Sourdough Discard
Any hydration level works. Room-temperature discard blends best.
Full Ingredients List
Sourdough Oatmeal Cookies
- 1½ cups old-fashioned rolled oats
- 1 cup all-purpose flour
- ½ teaspoon baking soda
- ½ teaspoon baking powder
- ¾ teaspoon salt
- 1½ teaspoons ground cinnamon
- ¾ cup unsalted butter, softened
- ¾ cup brown sugar, packed
- ¼ cup granulated sugar
- 1 large egg
- 1 egg yolk
- ½ cup sourdough discard
- 1½ teaspoons vanilla extract
Cream Filling
- ½ cup unsalted butter, softened
- 1½–2 cups powdered sugar
- 1½ teaspoons vanilla extract
- 1–2 tablespoons heavy cream or milk
- Pinch of salt
Step-by-Step Instructions
Step 1: Prepare the Oats
For extra tenderness, you can soak the oats in the sourdough discard for 10–15 minutes before mixing. This step is optional but recommended.
Step 2: Mix the Dry Ingredients
In a medium bowl, whisk together flour, baking soda, baking powder, salt, and cinnamon. Set aside.
Step 3: Cream the Butter and Sugars
In a large mixing bowl, beat the butter, brown sugar, and granulated sugar until light and fluffy—about 2–3 minutes. This step is crucial for soft cookies.
Step 4: Add Eggs and Flavorings
Beat in the egg and egg yolk until fully incorporated. Add vanilla extract and sourdough discard, mixing until smooth.
Step 5: Combine Wet and Dry Ingredients
Gradually add the dry ingredients to the wet mixture, mixing just until combined. Fold in the oats gently.
Do not overmix—overworking the dough can lead to tough cookies.
Step 6: Chill the Dough
Cover the dough and refrigerate for 30–60 minutes. This helps the cookies hold their shape and improves flavor.
Step 7: Bake the Cookies
Preheat oven to 350°F (175°C). Line baking sheets with parchment paper.
Scoop dough into 1½–2 tablespoon portions and place 2–3 inches apart.
Bake for 10–12 minutes, until edges are set but centers look slightly underbaked.
Cool on the baking sheet for 5 minutes, then transfer to a wire rack.
Making the Cream Filling
Step 1: Beat the Butter
In a bowl, beat softened butter until smooth and creamy.
Step 2: Add Sugar and Flavor
Gradually add powdered sugar, vanilla extract, salt, and cream. Beat until fluffy, light, and spreadable.
Adjust sweetness and consistency as needed.
Assembling the Cream Pies
- Match cookies by size.
- Spread or pipe cream filling onto the flat side of one cookie.
- Top with a second cookie, pressing gently.
For neat presentation, piping the filling works best, but spreading is perfectly fine for a rustic look.
Storage & Make-Ahead Tips
- Room Temperature: 1 day (cool environment)
- Refrigerator: Up to 5 days
- Freezer: Up to 2 months
Freeze cookies and filling separately for best results.
Variations & Customizations
Cinnamon Cream Filling
Add ½ teaspoon cinnamon to the filling for extra warmth.
Maple Cream Pies
Replace vanilla with maple extract and use maple syrup powder if available.
Raisin Oatmeal Cream Pies
Fold ½ cup raisins into the dough for a classic twist.
Chocolate Chip Version
Add mini chocolate chips for extra indulgence.
Common Issues
Cookies too flat:
– Dough wasn’t chilled long enough
– Butter too soft
Cookies too dry:
– Overbaked
– Too much flour
Filling too runny:
– Add more powdered sugar
– Chill briefly before assembling
