My sourdough oatmeal cookies are the perfect way to enjoy a delicious, cinnamony treat while also using up some of your sourdough starter. These cookies are soft and chewy with an optional maple glaze that hardens on top to really bring out the cookie's chewiness. Warning: these are addicting!
Milkas needed for consistency (add 1 teaspoon at a time)
Instructions
Preheat the oven to 375°F and line a baking sheet with parchment or a silicone mat.
Beat the softened butter, sugars, and vanilla until light and fluffy, 5–10 minutes.
227 g butter, 300 g brown sugar, 100 g white sugar, 2 tsp vanilla extract
Scrape down the bowl, add the sourdough discard and eggs, and mix until just combined.
60 g sourdough discard, 2 eggs
In a separate bowl, whisk the flour, cinnamon, nutmeg, baking soda, salt, and oats.
270 g all-purpose flour, 1½ tsp cinnamon, ½ tsp nutmeg, 1 tsp baking soda, 1 tsp salt, 270 g quick-cooking oats
Slowly add the dry ingredients to the wet and mix until combined.
Scoop dough balls 2 inches apart on the sheet and lightly flatten with a fork. Bake for 8 minutes — tops will look slightly underdone.
Cool on the pan at least 5 minutes, then transfer to a rack and cool completely.
Maple glaze: Whisk the powdered sugar, maple syrup, cinnamon, and vanilla until smooth, thinning with milk 1 teaspoon at a time if needed. Drizzle or dunk the cooled cookies, then let set.
120 g powdered sugar, ¼ –⅓ cup 100% maple syrup, ¼ tsp cinnamon, ½ tsp vanilla extract, Milk
Notes
Don't overbake — these stay soft and chewy when pulled at 8 minutes. Bake a test cookie to dial in your oven.
Store at room temperature for 4–7 days (better after day two!) or freeze for up to 6 months.
Scoop dough balls ahead and bake from chilled or frozen, adding 1–2 minutes.