Is there anything more comforting than a warm oatmeal cookie? For me, it’s the ultimate childhood memory—the smell of home. Whether you’re a “Team Raisin” purist or a chocolate chip rebel, today is our day to celebrate #NationalOatmealCookieDay . Grab a glass of milk and your sourdough starter; we’re turning Mom’s classic recipe into a chewy, tangy masterpiece.
From Scottish Oatcakes to American Classics
The oatmeal cookie we know today has a long, hearty lineage. But it originated from Scottish oatcakes in the 1800s, making the oatmeal cookie the original “energy bar”—simple, savory biscuits that were a staple for soldiers and travelers because they were easy to carry and packed with energy.
As these recipes migrated to America, they underwent a sweet transformation:
- 1900s Explosion: The modern, sweetened version gained massive popularity in the early 20th century.
- The Quaker Connection: In 1901, the first recipe for “Oatmeal Cakes” appeared on the Quaker Oats container, cementing its place in American pantries.
- A “Healthier” Treat: Because of the iron and fiber content in oats, these have long been touted as the “nutritious” choice in the cookie jar. Adding sourdough starter or discard only improves this, adding probiotics and breaking down phytic acid for better digestion!
Why Oatmeal and Sourdough are a Perfect Match
Oats are incredibly absorbent, which makes them the perfect partner for sourdough discard. The oats soak up the extra hydration from the starter, resulting in a cookie that is thick, soft, and stays moist much longer than a standard flour-only cookie.
Sourdough Oatmeal Chocolate Chip Cookies
This recipe creates a chewy, flavorful cookie by using sourdough discard to add a subtle tang and moisture to the classic oatmeal chocolate chip combination. Chilling the dough is a critical step to ensure a chewy texture rather than a “cakey” one.
Sourdough Oatmeal Chocolate Chip Cookies
- Yields: Approx. 16–24 cookies
- Prep time: 15–30 minutes
- Chill time: At least 2 hours (up to 24 hours for best flavor)
- Bake time: 10–12 minutes
Ingredients
| Ingredient | Imperial | Metric |
| Unsalted Butter (Melted & Browned) | 1 cup (2 sticks) | 225g |
| Brown Sugar (Packed) | ¾ cup | 180g |
| Granulated White Sugar | ¾ cup | 150g |
| Sourdough Discard (Unfed) | ½ cup | 120g |
| Large Eggs | 2 eggs | 110g |
| Vanilla Extract | 1 ½ tsp | 6g |
| All-Purpose Flour | 2 ¼ cups | 280g |
| Old Fashioned Rolled Oats | 2 ¾ cups | 270g |
| Baking Soda | 1 tsp | 6g |
| Sea Salt | 1 tsp | 6g |
| Ground Cinnamon (Optional) | ½ tsp | 3g |
| Chocolate Chips or Chunks | 1 ½ cups | 250g |
Instructions
- Brown the Butter: Melt the butter in a pan over medium heat, stirring constantly for 2–3 minutes until it foams and turns a deep auburn color. This “browning” process creates a rich, nutty aroma and—crucially for sourdough bakers—cooks off excess water. This ensures the added hydration from your discard doesn’t make the dough too wet. Pour the browned butter into a heat-proof bowl and let it cool for at least 30 minutes until it reaches room temperature.
- Mix Dry Ingredients: In a medium bowl, whisk together the flour, oats, baking soda, salt, and cinnamon. (NOTE: If you want a more “refined” texture, pulse half of your oats in a blender for 5 seconds before adding them. This creates a mix of flour-like oat dust and whole hearty grains for the ultimate mouthfeel.)
- Cream Butter and Sugars: Once the browned butter is cooled, combine it with the brown and white sugars in a stand mixer or large bowl. Beat on medium speed until light and fluffy.
- Incorporate Wet Ingredients: Add the eggs one at a time, mixing well after each. Then, stir in the sourdough discard and vanilla extract until fully incorporated.
- Combine: Slowly add the dry ingredient mixture to the wet ingredients on low speed until just combined. Fold in the chocolate chips by hand with a spatula.
- The Chill: Cover the dough and refrigerate for at least 2 hours (or up to 72 hours for full fermentation). This allows the oats to absorb the moisture from the sourdough, ensuring a chewy texture.
- Bake: Preheat your oven to 350°F (175°C). Scoop the dough (about 3 tablespoons or 75g per ball) onto a parchment-lined baking sheet. Bake for 10–12 minutes until the edges are golden brown, but the centers are still soft. Let them cool on the baking sheet for 5 minutes before transferring to a wire rack
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