Crumbl Iced Oatmeal Cookies: The Ultimate Guide Recipe
Introduction
Crumbl Iced Oatmeal Cookies are a delightful treat combining soft, chewy oats with a sweet, creamy icing. These cookies strike the perfect balance of textures and flavors, making them a favorite for any occasion. Follow this ultimate guide to bake them perfectly at home.

Ingredients
- 2 ½ cups (300g) all-purpose flour
- 1 teaspoon baking soda
- 1 teaspoon salt
- 1 cup (2 sticks) unsalted butter, softened
- 1 ¾ cups (350g) granulated sugar
- ¾ cup (150g) packed light brown sugar
- 2 large eggs
- 2 teaspoons vanilla extract
- 2 cups (240g) rolled oats
- 1 cup (120g) chocolate chips
- ½ cup (60g) all-purpose flour (for crumble topping)
- ½ cup (60g) rolled oats (for crumble topping)
- ¼ cup (50g) packed light brown sugar (for crumble topping)
- ¼ teaspoon ground cinnamon
- ¼ cup (50g) unsalted butter, melted (for crumble topping)
- 4 cups (480g) powdered sugar (for icing)
- ½ cup (120ml) milk (for icing)
- 2 tablespoons unsalted butter, softened (for icing)
- 1 teaspoon vanilla extract (for icing)
- Pinch of salt (for icing)
- Optional: Food coloring (light blue recommended)
Instructions
- Step 1: Preheat your oven to 375°F (190°C) and line baking sheets with parchment paper for easy cleanup.
- Step 2: In a medium bowl, whisk together 2 ½ cups flour, baking soda, and salt; set this dry mix aside.
- Step 3: In a large bowl, cream the softened butter with granulated sugar and brown sugar until the mixture is light and fluffy.
- Step 4: Beat in the eggs one at a time, then stir in vanilla extract to combine well.
- Step 5: Gradually add the dry ingredients to the wet ingredients while mixing on low speed until just combined.
- Step 6: Stir in the rolled oats and chocolate chips evenly throughout the dough.
- Step 7: For the crumble topping, combine flour, oats, brown sugar, and cinnamon in a small bowl.
- Step 8: Pour the melted butter into the crumble mixture and stir until crumbly in texture.
- Step 9: Drop rounded tablespoons of cookie dough onto the prepared baking sheets, spacing them about 2 inches apart.
- Step 10: Evenly sprinkle the crumble topping over each portion of cookie dough.
- Step 11: Bake the cookies for 10-12 minutes, until the edges turn golden brown and the centers remain slightly soft.
- Step 12: Let the cookies cool on the baking sheets for a few minutes before transferring them to a wire rack to cool completely.
- Step 13: To make the icing, whisk together powdered sugar, milk, softened butter, vanilla extract, and a pinch of salt in a medium bowl until smooth and creamy.
- Step 14: Add food coloring if desired, mixing until the color is even.
- Step 15: Once the cookies are completely cool, spread the icing on top of each cookie.
- Step 16: Allow the icing to set fully before serving or storing the cookies.
Tips & Variations
- For a nutty twist, add ½ cup chopped walnuts or pecans to the dough along with the oats and chocolate chips.
- Use old-fashioned rolled oats instead of quick oats for a chewier texture.
- If you prefer a cream cheese icing, substitute some butter for cream cheese in the icing mixture for a tangy flavor.
- To make the crumble topping extra crunchy, toast the oats lightly before mixing.
- Add a pinch of ground nutmeg or ginger to the crumble for a warm spice note.
Storage
Store the iced cookies in an airtight container at room temperature for up to 4 days. If you prefer, keep them in the fridge to extend freshness up to one week. To re-soften chilled cookies, briefly warm them in the microwave for about 10-15 seconds before serving.
How to Serve
Serve this delicious recipe with your favorite sides.
FAQs
Can I make the cookie dough ahead of time?
Yes, the dough can be refrigerated for up to 24 hours before baking. This helps develop the flavors and improves the texture of the cookies.
What if I don’t have food coloring for the icing?
The icing is delicious even without food coloring. You can also experiment with natural colorings like beet juice or matcha powder if you want a vibrant hue.
