Name: Eggnog Iced Oatmeal Cookies Recipe
Prep time: 30 min
Cook time: 15 min
Total time: 45 min
Cuisine: American
Ingredients: 3/4 cup unsalted butter, cut into tablespoon pieces; 1 1/4 cup old fashioned oats; 1 1/4 cups all-purpose flour; 1/2 teaspoon baking soda; 1/2 teaspoon salt; 1/2 teaspoon ground cinnamon; 1/4 teaspoon ground nutmeg; 3/4 cup packed dark brown sugar; 1/4 cup granulated sugar; 1 egg; 1 egg yolk; 2 teaspoons pure vanilla extract; 1 1/3 cups confectioner’s sugar; 3 to 4 tablespoons eggnog; 1/4 teaspoon pure vanilla extract; Pinch of salt

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If you adore the cozy flavors of the holidays, then you are going to fall head over heels for this Eggnog Iced Oatmeal Cookies Recipe. These soft, chewy cookies combine beautifully browned butter, warm spices, and hearty oats with a luscious eggnog glaze that’s just sweet enough to make each bite a festive treat. Whether you’re baking for a crowd or gifting to loved ones, these cookies offer the perfect balance of spice and sweetness wrapped up in classic holiday cheer.

Ingredients You’ll Need

A top view scene shows various baking ingredients arranged neatly on a white marbled surface: two white bowls filled with pale rolled oats and white flour sit at the top right, a white bowl with a cracked egg yolk sits near the center bottom, and beside it, a white bowl with an egg yolk is placed slightly higher. To the left, there is a brown bowl holding thick yellow butter sticks, and small wooden bowls contain brown sugar, cinnamon, salt, and other baking powders scattered around. A small glass bowl with white granulated sugar is also present in the bottom right area. The bowls and ingredients create a clean and organized layout. photo taken with an iphone --ar 4:5 --v 7

Don’t underestimate these ingredients just because they’re simple—they each play a key role in making the flavors pop and the texture just right. From the rich nuttiness of browned butter to the aromatic spices and the creamy eggnog glaze, every component is essential.

Unsalted butter: Browning it adds a deep, nutty flavor that makes the cookies irresistible.
Old fashioned oats: Gives the cookies their hearty, chewy texture that feels wholesome and comforting.
All-purpose flour: The base that holds everything together for perfect structure.
Baking soda: A little lift ensures the cookies stay soft without getting cakey.
Salt: Balances the sweetness and enhances the warm spices.
Ground cinnamon and nutmeg: Classic holiday spices that bring warmth and nostalgia with each bite.
Dark brown sugar: Provides rich molasses undertones and chewy moisture.
Granulated sugar: Adds just the right crispness around the edges.
Egg plus egg yolk: Keeps the cookies tender and chewy.
Pure vanilla extract: Adds depth and rounds out the sweet flavors perfectly.
Confectioner’s sugar: For the smooth, sweet glazing icing.
Eggnog: Brings that unmistakable holiday flavor to the icing.
Pinch of salt in icing: Cuts through the sweetness for a balanced finish.

How to Make Eggnog Iced Oatmeal Cookies Recipe

Step 1: Brown the Butter

Start by placing the unsalted butter in a medium saucepan over medium heat. Stir it often as it melts, then begins to foam and finally brown with a nutty aroma. This browning takes about 5 minutes and sets the flavor foundation for the entire cookie. Carefully scrape the browned butter into a large bowl and let it cool to room temperature—or pop it in your fridge to speed things up.

Step 2: Prepare the Oats and Dry Ingredients

Next, pulse the old fashioned oats in a food processor about 8 times to create a mix of chopped oats and oat flour. This adds texture and helps the oats blend seamlessly into the dough. In a separate bowl, whisk together your processed oats, flour, baking soda, salt, cinnamon, and nutmeg. Set this aside for now.

Step 3: Combine Wet Ingredients with Browned Butter

Into the cooled browned butter, add the dark brown sugar, granulated sugar, egg, egg yolk, and vanilla extract. Stir with a spatula until everything is well combined and looks smooth and luscious. This mixture is what gives these cookies their rich, chewy texture.

Step 4: Mix Dry and Wet Ingredients and Chill

Gently fold your dry ingredient mixture into the wet mixture until just combined. Resist the urge to overmix—it’s the key to soft cookies! Cover the dough and chill it for at least 30 minutes, or up to 72 hours if you want to prepare ahead. Chilling helps the flavors develop and keeps the cookies from spreading too thin while baking.

Step 5: Bake Your Cookies

When you’re ready to bake, preheat your oven to 350 degrees Fahrenheit. Take the dough out of the fridge and let it warm to room temperature while the oven heats up. Scoop the dough into balls about 1 ½ tablespoons each and place them 3 inches apart on parchment-lined baking sheets. Bake for 10 to 12 minutes until the edges are lightly browned but the centers stay soft. Allow the cookies to rest on the sheet for 5 minutes before moving them to a wire rack to cool completely.

Step 6: Prepare and Apply the Eggnog Icing

To make the icing, whisk together confectioner’s sugar, 3 tablespoons eggnog, pure vanilla extract, and a pinch of salt until smooth. The consistency should be thick but drizzleable—if it’s too thick, add an extra tablespoon of eggnog. Dip the tops of each cooled cookie into the icing and allow the excess to drip off. Place the cookies back on the wire rack and let the icing set before serving.

How to Serve Eggnog Iced Oatmeal Cookies Recipe

The image shows a cooling rack filled with a dozen round, light brown cookies that have a rough, cracked texture and visible oats inside. The cookies are evenly spaced in rows. On the upper right side, there is a white bowl containing a pale beige batter with a metal whisk inside. Part of a white marbled surface is visible underneath, along with a beige cloth near the top left corner. There is also a partial view of a light-colored egg carton on the right side. The scene is lit softly, giving a fresh, homemade feel to the cookies photo taken with an iphone --ar 4:5 --v 7

Garnishes

Sprinkling a little freshly grated nutmeg or a dusting of cinnamon over the freshly iced cookies enhances the festive spices and adds a beautiful finishing touch that invites everyone to dig in.

Side Dishes

Pair these cookies with a warm cup of spiced chai, peppermint hot chocolate, or a classic cup of coffee to complement the rich eggnog flavor and cozy spices for the ultimate holiday treat experience.

Creative Ways to Present

For gifting or parties, stack a few iced oatmeal cookies in a clear, festive box tied with a red ribbon or arrange them on a decorative holiday platter garnished with fresh cranberries and evergreen sprigs to make your presentation as joyful as the cookies taste.

Make Ahead and Storage

Storing Leftovers

Keep any leftover cookies in an airtight container at room temperature for up to 4 days. This helps preserve their soft, chewy texture and keeps the glaze from softening too much.

Freezing

Want to save some for later? You can freeze the baked cookies without icing by placing them in a single layer on a baking sheet, freezing until solid, then transferring to a freezer-safe bag or container for up to 3 months. Icing is best added after thawing to keep the glaze fresh.

Reheating

To enjoy these cookies warm, pop them in the microwave for 10 to 15 seconds. If they’re iced, warm them gently to avoid melting the glaze too much. Warming brings back that fresh-baked softness and helps the spices bloom.

FAQs

Can I use quick oats instead of old fashioned oats?

While quick oats will work in a pinch, old fashioned oats provide a better texture that balances chewiness and structure. Quick oats may make the cookies a bit softer and less textured.

Is it necessary to brown the butter?

Browning the butter adds a wonderful nutty flavor and depth that really sets these cookies apart. You can skip it, but the cookies won’t have that signature richness and complexity.

How long does the eggnog icing keep on the cookies?

The eggnog icing is best enjoyed within a day or two of glazing the cookies. It can soften over time, especially if stored in a humid environment, so it’s perfect for fresh serving or gifting shortly after decorating.

Can I make the dough ahead of time?

Absolutely! Chilling the dough for up to 72 hours actually enhances the flavor and texture. Just keep it tightly wrapped in the fridge until you’re ready to bake.

What can I use instead of eggnog for the icing?

If eggnog isn’t available or you prefer a dairy-free option, you can substitute milk or a plant-based milk with a small pinch of nutmeg and cinnamon added to mimic that signature flavor.

Final Thoughts

I promise you, once you try this Eggnog Iced Oatmeal Cookies Recipe, it will quickly become a holiday favorite and a go-to for festive baking sessions. There’s just something so satisfying about the chewy oats paired with the warm spices and that dreamy eggnog glaze that brings pure comfort and joy. So gather your ingredients, roll up your sleeves, and treat yourself to a batch of these irresistibly cozy cookies!