Name: Eggnog Iced Oatmeal Cookies Recipe
Prep time: 15 min
Cook time: 14 min
Total time: 45 min
Cuisine: American
Ingredients: 3/4 cup unsalted butter, cut into tablespoon pieces; 1 1/4 cups 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

Jump to Recipe· 3.9 from 4 reviews

I absolutely adore these Eggnog Iced Oatmeal Cookies Recipe because they combine the comforting warmth of classic oatmeal cookies with the rich, festive flavors of eggnog icing. Whenever I bake them, my kitchen fills with enchanting aromas of cinnamon and nutmeg, making me feel ready to celebrate the season. They’re chewy but with a perfect crumb, and the smooth eggnog glaze on top adds just the right touch of sweetness and holiday cheer. I love sharing this recipe because it’s become a real family favorite, one that brings a smile to everyone’s face with every bite.

Why You’ll Love This Eggnog Iced Oatmeal Cookies Recipe

What makes this recipe truly stand out for me is its enchanting blend of flavors. The ground cinnamon and nutmeg woven into the cookie dough give these oatmeal cookies a warm, spicy kick that perfectly complements the mellow richness of the browned butter. Then, when you add that silky eggnog icing on top, it elevates the whole experience. Each bite feels like a cozy hug on a chilly day, full of festive spirit without being overly sweet. I find myself savoring these cookies with a cup of tea or hot cocoa anytime I need a little pick-me-up.

The ease of preparation is another reason this recipe is so special to me. The ingredients are simple and pantry-friendly, yet the results feel so special that you’d think they took hours to bake. I appreciate that the dough chills nicely, allowing me to prep in advance or even customize the timing around my schedule. These cookies are perfect for holiday parties, casual family gatherings, or just an everyday treat to make any moment feel festive. I promise you’ll love how straightforward and satisfying this recipe turns out!

Ingredients You’ll Need

The image shows several small white bowls and brown wooden small bowls arranged neatly on a white marbled surface. The largest white bowl contains light beige rolled oats, and another large white bowl holds white flour. There is a small white bowl with an egg yolk and a white bowl with egg white next to each other. A white bowl contains white granulated sugar. A brown wooden small bowl is filled with a dark cinnamon powder, and another white bowl holds brown sugar. There is also a brown wooden plate with thick yellow butter slices. The items are all spread out evenly in a flat lay style, showing the raw baking ingredients clearly. Photo taken with an iphone --ar 4:5 --v 7

Each ingredient in this recipe plays a key role, from texture to flavor and even color. The combination is a perfect balance of hearty oats, gentle spices, and that luscious glaze that brings everything together.

Unsalted butter (3/4 cup): Browning the butter adds a rich, nutty flavor that elevates the entire cookie.
Old fashioned oats (1 1/4 cups): Provides chewy texture and wholesome heartiness.
All-purpose flour (1 1/4 cups): Gives structure to the cookies while keeping them soft.
Baking soda (1/2 teaspoon): Helps the cookies rise just perfectly.
Salt (1/2 teaspoon): Balances sweetness and enhances all the flavors.
Ground cinnamon (1/2 teaspoon) & nutmeg (1/4 teaspoon): These spices bring classic holiday warmth and fragrance.
Dark brown sugar (3/4 cup): Adds moisture and a deep, caramel-like sweetness.
Granulated sugar (1/4 cup): Provides subtle crunch and sweetness.
Egg + egg yolk: Enhances richness and gives the cookies a tender crumb.
Pure vanilla extract (2 teaspoons): Rounds out the flavors with aromatic warmth.
Confectioner’s sugar (1 1/3 cups): The base for the smooth eggnog icing that ties it all together.
Eggnog (3 to 4 tablespoons): Infuses the icing with authentic seasonal flavor.
Pure vanilla extract (1/4 teaspoon) & a pinch of salt: Fine-tune the icing’s sweetness and taste.

Directions

Step 1: Brown the butter by placing the cut pieces in a medium saucepan over medium heat. Stir often so it melts evenly, and watch closely as it foams and the color turns from yellow to golden with a nutty aroma. This usually takes about 5 minutes. Once browned, scrape the butter into a large mixing bowl and let it cool to room temperature. To speed this up, place it briefly in the fridge.

Step 2: Pulse the oats in a food processor about eight times until you get a mix of chopped oats and fine oat flour. This gives the cookies a nice texture—some chewy oats, some soft flour.

Step 3: In a medium bowl, whisk together the processed oats, all-purpose flour, baking soda, salt, cinnamon, and nutmeg. Set aside for now.

Step 4: To the browned butter, add both sugars, the whole egg, the extra egg yolk, and 2 teaspoons of vanilla extract. Stir everything with a spatula until fully combined and smooth.

Step 5: Gradually add the dry ingredients into your wet mixture and stir gently until just combined. Be careful not to overmix because you want the cookies tender. Cover and chill the dough for 30 minutes minimum — you can also refrigerate it for up to 72 hours if you want to bake later.

Step 6: When you’re ready to bake, preheat your oven to 350°F (175°C). Take the dough out of the fridge and allow it to come back to room temperature as the oven heats.

Step 7: Scoop the dough into approximately 1 1/2 tablespoon-sized balls and place them 3 inches apart on baking sheets lined with parchment paper. This spacing helps prevent them from spreading into one big cookie.

Step 8: Bake for 10–12 minutes or until the edges are lightly golden but centers still look slightly soft. Remove from oven and let the cookies cool on the sheet for 5 minutes, then transfer to a wire rack to cool completely.

Step 9: While the cookies cool, prepare the eggnog icing by whisking together the confectioner’s sugar, eggnog (start with 3 tablespoons and add more to reach your desired consistency), 1/4 teaspoon vanilla, and a pinch of salt in a small bowl.

Step 10: Once the cookies are cooled, drizzle or spread the eggnog icing over each cookie. Let the icing set fully before serving or storing.

Servings and Timing

This Eggnog Iced Oatmeal Cookies Recipe makes about 25 delicious cookies, which is perfect for sharing with friends or keeping a stash for yourself (no judgment here!). The prep time is roughly 15 minutes, not counting the chilling and baking. Bake time is around 10 to 12 minutes per batch, so plan about 30 minutes total for baking all the cookies. Including dough chilling and cooling time, you’re looking at about 45 minutes hands-on, plus resting time. If you chill the dough longer, it enhances the flavor and texture even more, but it’s not mandatory.

How to Serve This Eggnog Iced Oatmeal Cookies Recipe

A white tray lined with light brown parchment paper holds a pile of round cookies with a cracked surface, each covered in a thin, smooth layer of white icing that flows unevenly over the light brown cookie base. The cookies look soft and slightly rough in texture, with oatmeal flakes visible. The tray is placed on a white marbled surface scattered with loose oat flakes and a piece of beige linen cloth on the left. To the right of the tray, there is a white bottle filled with a creamy liquid labeled

I love serving these Eggnog Iced Oatmeal Cookies warm or at room temperature alongside cozy beverages. A hot mug of spiced chai tea or rich hot chocolate compliments their subtle spice and sweetness perfectly, creating an indulgent treat that feels so festive. For holiday gatherings, I sometimes plate them on a decorative platter with fresh cranberries or sprigs of rosemary for a festive touch that looks as delightful as they taste.

For a fun twist, these cookies also pair wonderfully with creamy cocktails like an eggnog latte or even a lightly spiced rum punch to echo those seasonal flavors in the cookie icing. Serving them at holiday brunch or after dinner dessert is a guaranteed crowd-pleaser. I usually plate two or three cookies per guest, balancing the indulgence while allowing everyone to savor each delicious bite without feeling overwhelmed.

Another tip I’ve picked up is to gently sprinkle a tiny bit of extra ground nutmeg or cinnamon over the icing right before it sets for an elegant and aromatic finish. You can also offer a small bowl of whipped cream or vanilla ice cream on the side to turn these cookies into an irresistible treat that everyone comes back for seconds of!

Variations

One of the best things about this Eggnog Iced Oatmeal Cookies Recipe is how versatile it is. If you want to make a gluten-free version, I swap the all-purpose flour for a gluten-free baking blend, and it works beautifully without compromising texture. For a vegan twist, I replace butter with a good quality plant-based spread and use flax eggs instead of real ones. The flavor still shines, and the texture remains wonderfully chewy.

I’ve also experimented by mixing in chopped toasted pecans or walnuts, which add a lovely crunch and depth to the cookies. If you prefer a stronger spice punch, increasing the cinnamon and nutmeg slightly or adding a pinch of ground cloves gives the cookies an even more festive aroma. For a different icing option, sometimes I make a simple cream cheese glaze with a touch of nutmeg—it’s creamy and less sweet but still delicious.

Lastly, instead of baking traditional cookies, this dough works great shaped as bars or baked in mini muffin tins for party-sized bites. You can even skip chilling the dough if you’re in a rush, though chilling does help develop the flavor and make it easier to shape. I love having these options when I’m in different moods or cooking for varying occasions.

Storage and Reheating

Storing Leftovers

To keep these Eggnog Iced Oatmeal Cookies fresh, I store them in an airtight container at room temperature. Layering the cookies between sheets of parchment paper prevents sticking, especially with the icing on top. They usually stay fresh and delicious for up to 4 days. If your kitchen is warm, I recommend storing them in the fridge to avoid the icing softening too much.

Freezing

I’ve found these cookies freeze very well, which is fantastic for prepping ahead during the busy holiday season. To freeze, place the cooled and iced cookies in a single layer on a baking sheet and freeze until solid. Then transfer them to a freezer-safe container or zip-top bag with parchment paper layers to prevent sticking. They keep in the freezer for up to 3 months. When you’re ready, thaw them at room temperature for a few hours before serving.

Reheating

If you want to enjoy these cookies warm again, I recommend reheating them briefly in a warm oven at 300°F (150°C) for about 5 minutes. This helps soften the cookie and lightly refreshes the icing without melting it completely. Avoid microwaving, as the icing can become too runny and the texture soggy. Reheating this way brings back that freshly-baked feeling and makes them even more irresistible!

FAQs

Can I make this recipe without browning the butter?

You can skip browning the butter, but I highly recommend it because it adds a beautiful nutty depth of flavor that really sets these cookies apart. If pressed for time, just use melted butter instead, but your cookies won’t have quite the same rich complexity.

Is there a substitute for eggnog in the icing?

Absolutely! If you don’t have eggnog on hand, you can use milk or cream with a pinch of ground nutmeg and cinnamon stirred in. This won’t be quite as festive but will give a similar smooth sweetness to your icing.

Can I prepare the cookie dough in advance?

Yes, the dough actually benefits from chilling. You can make it up to 72 hours before baking, which enhances flavors and makes it easier to handle. Just keep it covered tightly in the fridge.

How long will the cookies stay soft?

These cookies are deliciously soft for about 3 to 4 days when stored properly in an airtight container. After that, they may start to dry out, but a quick reheat can revive their softness.

Can I add mix-ins like raisins or chocolate chips?

Definitely! I love adding dried cranberries for a tart contrast or bittersweet chocolate chips for extra indulgence. Just fold them in before chilling the dough to distribute evenly.

Conclusion

I truly hope you give this Eggnog Iced Oatmeal Cookies Recipe a try because it combines comfort, warmth, and festive flavor in every bite. These cookies have become a special treat in my home that always brings joy and a bit of holiday magic to any occasion. Baking and sharing them is one of my favorite ways to spread happiness, and I know you’ll love creating those same memories in your kitchen too!