There’s something wonderfully comforting about baking cookies, especially after a long day. Making these cookies is an enjoyable process that fills your kitchen with warmth and inviting aromas. Whether shared during family gatherings or savored during quiet moments, these Iced Oatmeal Cookies are a delightful treat. They offer a perfect balance of sweetness and texture, making them a satisfying indulgence. Let’s dive into the recipe, and you’ll find it’s easy to follow and enjoyable to create.
Why You’ll Love This The Best Crumbl Iced Oatmeal Cookies
These cookies come together simply, making them a reliable choice whenever you need a bit of comfort. With a satisfying chewiness from the oats and a hint of sweetness from the sugars, they bring balanced flavor to every bite. The Best Crumbl Iced Oatmeal Cookies seamlessly fit into everyday life, whether you’re looking for an afternoon snack or something sweet after dinner.
Kitchen Tools You’ll Need
- Mixing bowl
- Whisk
- Baking sheet
- Parchment paper
- Measuring cups and spoons
Ingredients
- 1/2 cup butter, softened (adds richness and moisture)
- 1/3 cup brown sugar (contributes moisture and depth of flavor)
- 1/4 cup granulated sugar (provides sweetness and texture)
- 1 tbsp vanilla extract (enhances overall flavor)
- 1 egg, at room temperature (binds ingredients and adds moisture)
- 1 & 1/4 cup old fashioned whole rolled oats (offers chewiness and texture)
- 1 cup all-purpose flour (provides structure)
- 1/4 tsp cinnamon (adds warmth and subtle spice)
- Pinch of nutmeg (imparts depth of flavor)
- 1/2 tsp baking soda (helps the cookies rise)
- 1/4 tsp salt (enhances flavor)

For the icing:
- 3/4 cup powdered sugar (sweetens and thickens the icing)
- 1.5 tbsp milk (provides the right consistency for spreading)
- 1/4 tsp vanilla (adds flavor to the icing)
How to Make The Best Crumbl Iced Oatmeal Cookies
Step 1. Begin by creaming together the softened butter, brown sugar, and granulated sugar in a mixing bowl. Use a whisk or a wooden spoon to combine until the mixture is light and fluffy. This step is essential as it incorporates air into the butter, creating a desirable texture in the cookies.
Step 2. Add the vanilla extract and the egg to the creamed butter and sugars. Mix well until fully incorporated. The egg will provide moisture, while the vanilla enhances the overall flavor of the cookies. The mixture should appear smooth and slightly thicker.
Step 3. In a separate bowl, combine the old-fashioned oats, all-purpose flour, cinnamon, nutmeg, baking soda, and salt. Stir these dry ingredients together until they are evenly mixed. This step ensures that each bite of the cookie is well-seasoned and balanced.
Step 4. Gradually add the dry mixture into the wet mixture, stirring until just combined. Be careful not to overmix, as this can affect the texture. The dough should be thick and slightly sticky, indicating it is ready for the next step.
Step 5. Preheat your oven to 350°F, preparing a baking sheet lined with parchment paper. Using a spoon or cookie scoop, drop heaping tablespoons of the cookie dough onto the sheet, spacing them a couple of inches apart. This will allow the cookies room to spread while baking.
Step 6. Bake in the preheated oven until the edges are lightly golden and the centers appear set, which typically takes about 10-12 minutes. Keep an eye on them as they bake; they can go from underbaked to overbaked quickly.
Step 7. Once done, remove the cookies from the oven and allow them to cool on the baking sheet for a few minutes. This helps them firm up a bit. After a few minutes, transfer the cookies to a wire rack to cool completely before icing.
Step 8. While the cookies cool, prepare the icing by whisking together the powdered sugar, milk, and vanilla in a small bowl until smooth. The consistency should be thick yet spreadable. Adjust with a little more milk or powdered sugar to achieve your desired thickness.
Step 9. Once the cookies are fully cooled, generously drizzle or spread the icing over each cookie. The icing adds a sweet touch that complements the hearty oats beneath. Let the icing set for a bit before serving.

Serving Suggestions
These Crumbl Iced Oatmeal Cookies are versatile and can work beautifully at various times. Enjoy them for a cozy breakfast paired with a cup of coffee or tea. They also make for a delightful afternoon snack, especially when you’re in need of a small pick-me-up. If you’re gathering with family, they can be served as part of a simple dessert spread. Any leftovers can be stored easily in an airtight container, ready to enjoy later on.
Pro Tips for Best Results
- Ensure the butter is soft but not melted for easier mixing and better texture.
- Use old-fashioned whole rolled oats, as they provide the right chewiness.
- Allow the cookies to cool completely before icing to prevent melting.
- If you want a thicker icing, add more powdered sugar until the desired consistency is reached.
Common Mistakes to Avoid
- Using Cold Butter: Cold butter won’t cream well with the sugars, leading to dense cookies. Always let it soften at room temperature before starting.
- Overmixing the Dough: Mixing too much after adding the flour can make cookies tough. Mix just until combined for a softer texture.
- Incorrect Oven Temperature: An oven that’s too hot can cause cookies to bake unevenly. Use an oven thermometer to ensure accuracy.
- Not Cooling Before Icing: Icing warm cookies can cause the icing to melt and run. Make sure they cool completely on a rack for the best finish.
- Skipping the Parchment Paper: Baking directly on the sheet can cause sticking. Line with parchment to ensure cookies lift off easily.
- Not Measuring Ingredients Accurately: Cooking is as much about precision as it is about creativity. Use proper measuring cups and spoons for consistent results.
Variations & Substitutions
For those looking to tweak the recipe slightly, consider adding in chocolate chips for a sweet twist. You could also incorporate nuts for added crunch or swap the icing for a simple glaze. However, keep in mind that these variations might change the overall flavor and texture.
Storage & Reheating
To store the cookies, place them in an airtight container at room temperature for up to a week. For longer storage, keep them in the refrigerator, where they can last up to two weeks. If you want to freeze them, layer them between parchment paper and place them in a freezer-safe container. To enjoy them warm again, simply reheat in the oven at a low temperature until warmed through, ensuring that the texture remains inviting.
Frequently Asked Questions
Can I make this recipe ahead of time?
Yes, you can prepare the cookie dough ahead of time and refrigerate it for up to 3 days before baking. This can also enhance the flavors.
How long does it last in the fridge?
Stored in an airtight container, the cookies can last about one week in the refrigerator. Enjoy them at your leisure!
Can I freeze this recipe?
Absolutely! These cookies freeze well. Let them cool completely, then store in a freezer-safe bag or container for up to 3 months.
What can I substitute for one ingredient?
If you need to replace an ingredient, you might try coconut oil instead of butter for a dairy-free option, but this will alter the flavor.
Why didn’t my recipe turn out as expected?
Common issues include not measuring ingredients correctly, and using cold butter or an incorrect oven temperature. Checking each step can help ensure better results.
Final Thoughts
Making The Best Crumbl Iced Oatmeal Cookies is a straightforward and rewarding process. These cookies bring simple pleasures, whether enjoyed fresh out of the oven or shared with loved ones. The combination of hearty oats and sweet icing creates a delightful treat that’s perfect for any occasion. Embrace the experience of preparing these cookies, and enjoy their comforting nature with every bite.

Crumbl Iced Oatmeal Cookies
Ingredients
Main Ingredients
- 1/2 cup butter, softened adds richness and moisture
- 1/3 cup brown sugar contributes moisture and depth of flavor
- 1/4 cup granulated sugar provides sweetness and texture
- 1 tbsp vanilla extract enhances overall flavor
- 1 large egg, at room temperature binds ingredients and adds moisture
- 1 1/4 cups old fashioned whole rolled oats offers chewiness and texture
- 1 cup all-purpose flour provides structure
- 1/4 tsp cinnamon adds warmth and subtle spice
- a pinch nutmeg imparts depth of flavor
- 1/2 tsp baking soda helps the cookies rise
- 1/4 tsp salt enhances flavor
Icing Ingredients
- 3/4 cup powdered sugar sweetens and thickens the icing
- 1.5 tbsp milk provides the right consistency for spreading
- 1/4 tsp vanilla adds flavor to the icing
Instructions
Preparation
- Begin by creaming together the softened butter, brown sugar, and granulated sugar in a mixing bowl until light and fluffy.
- Add the vanilla extract and the egg to the creamed mixture, mixing well until fully incorporated.
- In a separate bowl, combine the old-fashioned oats, all-purpose flour, cinnamon, nutmeg, baking soda, and salt. Stir until evenly mixed.
- Gradually add the dry mixture into the wet mixture, stirring until just combined.
Baking
- Preheat your oven to 350°F and prepare a baking sheet lined with parchment paper.
- Drop heaping tablespoons of cookie dough onto the sheet, spacing them a couple of inches apart.
- Bake until the edges are lightly golden and the centers appear set, approximately 10-12 minutes.
- Remove from the oven and allow to cool on the baking sheet for a few minutes before transferring to a wire rack.
Icing
- While the cookies cool, whisk together the powdered sugar, milk, and vanilla until smooth.
- Once the cookies are completely cooled, drizzle or spread the icing over each cookie.