1teaspoonlight corn syrup for a shiny sheenOptional
¼teaspoonvanilla or maple extractOptional
Instructions
Preheat oven to 350°F . Line baking sheets with parchment.
Pulse oats in a food processor 4–5 times until coarsely ground.
1 cup rolled oats
In a bowl, whisk oats, flour, baking soda, cinnamon, nutmeg, and salt.
1 cup all-purpose flour, ½ teaspoon baking soda, ½ teaspoon cinnamon, ¼ teaspoon nutmeg, ½ teaspoon salt
In another bowl, whisk melted butter with both sugars. Stir in the beaten egg and vanilla.
½ cup unsalted butter, ½ cup brown sugar, ¼ cup granulated sugar, 1 large egg, 1 teaspoon vanilla extract
Mix dry ingredients into wet until just combined with a wooden spoon.
Optional: Chill dough 15–20 minutes for thicker cookies.
Scoop 1 tbsp of dough per cookie, roll into a ball and place 2 inches apart. For flatter cookies, press the balls down with your fingers before baking.
Bake 10–12 minutes until edges are set and the tops and edges are slightly golden.
Transfer to a wire rack to cool completely.
Mix the glaze ingredients until smooth and dip the tops of the cooled cookies in glaze and place on a baking sheet lined with parchment and a cooling rack set on top. Let the icing set before stacking.
1 cup powdered sugar, 2-3 tablespoons milk
Notes
Storage :
At Room Temperature: Store the iced oatmeal cookies in an airtight container at room temperature for up to 5 days. The glaze may soften slightly if the cookies are stacked, so if you’re layering them, place a sheet of parchment paper between each layer to help preserve the icing.
Freezer-Friendly: Once the icing is fully set, place the frosted oatmeal cookies in a single layer on a baking sheet to freeze. Then transfer to a freezer-safe container or bag, separating layers with parchment paper. Freeze for up to 3 months. Thaw at room temperature before serving.
Tips :
Lightly pulsing the oats a few times gives the cookies that signature chewy texture without making them too dense. You want a mix of fine and coarse pieces for the best bite.
If you love a thicker cookie with a soft center, chill the dough for 15–20 minutes before baking.
For a more traditional, flatter cookie, gently press the cookie dough balls down with your fingers before they go into the oven.
Make sure the cookies are completely cool before glazing. Set a wire cooling rack over a lined baking sheet to catch the excess drip and make cleanup a breeze.
Give the icing time to dry before storing or stacking the cookies—this helps keep that pretty glazed top intact.