If you love cookies that are soft, cozy, and full of flavor, you’re going to love these iced oatmeal cookies. They taste just like grandma’s, with warm cinnamon, chewy oats, and a sweet icing on top. I’ve made this recipe more than a few times, and every single time, people can’t stop eating them. These cookies are perfect for holidays, after-school snacks, or just when you’re craving something homemade and comforting.
Method
Get Your Oats Ready
The first step is to prepare the oats so they give your cookies the perfect chewy texture. Using a food processor or blender, pulse the rolled oats for about 10 seconds. You’re aiming for a mix of fine oat flour and small oat pieces. This gives the cookies their classic old-fashioned look and feel. Once you’ve reached that half-flour, half-chopped consistency, set the oats aside we’ll be using them shortly.
Cream the Butter and Sugar
In a large mixing bowl, combine the softened butter and packed brown sugar. Use an electric mixer on medium speed and beat until the mixture becomes light and creamy. This process usually takes about 2 to 3 minutes. It helps build the base for a soft and rich cookie, so take your time with this step.
Add the Wet Ingredients
Once your butter and sugar are creamed together nicely, it’s time to add the eggs, vanilla extract, and molasses. Make sure your eggs are at room temperature so they blend easily into the mixture. Beat everything together until the mixture looks smooth and uniform, with no streaks of egg or molasses left behind. The molasses adds a deep, rich sweetness that pairs so well with the cinnamon and oats.
Add the Spices and Oats
Next, sprinkle in the ground cinnamon and baking soda. Mix them in until fully combined, making sure the spices are evenly spread throughout the batter. Then, pour in your pulsed oats and stir until they’re well distributed. The oats will start thickening the batter and give it that hearty texture oatmeal cookies are known for.
Add the Flour
Now, add the all-purpose flour to the mix. Do this slowly about 1/2 cup at a time while mixing on a low speed. Adding the flour gradually helps keep the dough smooth and prevents overmixing. Mix just until the flour is fully combined and you can no longer see dry patches. Don’t overwork the dough here; overmixing can lead to tough cookies.
Chill the Dough
Once the dough is ready, cover the bowl and place it in the refrigerator for at least 1 hour. This is a super important step, so don’t skip it! Chilling the dough helps the butter firm back up, which prevents the cookies from spreading too much while baking. It also allows the flavors to meld together for a richer taste.
Shape the Cookies
After chilling, remove the dough from the fridge. Use a spoon or cookie scoop to take about 1-inch sized portions of dough. Roll each portion between your palms to form a smooth ball. Then place the dough balls on a parchment-lined baking sheet, leaving 2–3 inches of space between each one. These cookies spread out as they bake, so giving them room is key.
Bake
Preheat your oven to 350°F (175°C) and bake the cookies for about 10 to 12 minutes. Keep an eye on them when the edges turn golden brown and the centers look just set, they’re ready to come out. Let the cookies cool completely on the baking sheet or transfer them to a wire rack. They’ll firm up more as they cool.
Make the Icing
While the cookies are cooling, you can whip up the icing. In a small bowl, combine the powdered sugar, milk of your choice, and vanilla extract. Stir with a spoon until the icing is smooth and thick, but still pourable. If it’s too thick, add a tiny bit more milk. If it’s too runny, sprinkle in more powdered sugar.
Ice the Cookies
Once the cookies are cool to the touch, flip each one upside down and gently dip the top into the bowl of icing. Let any excess icing drip off before placing the cookie icing-side-up back onto the parchment paper. The icing will harden as it sets, creating that classic glazed look.
Let the Icing Set
To help the icing firm up faster, place the iced cookies in the fridge for about 10 minutes. After that, they’re ready to eat or store! Keep your cookies in an airtight container at room temperature for several days, or refrigerate them if you want them to last even longer.
Necessary Tools
- Large mixing bowl
- Electric mixer
- Food processor or blender
- Measuring cups & spoons
- Spatula or spoon
- Baking sheet
- Parchment paper
- Small bowl (for icing)
- Refrigerator
Homemade Iced Oatmeal Cookies Soft, Chewy, and Full of Flavor
Cuisine: AmericanDifficulty: Easy24
servings1
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minutes10
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minutesIngredients
For the cookies:
1 cup (2 sticks) butter, softened to room temperature
1 1/4 cup packed brown sugar
2 large eggs (room temperature)
2 tbsp molasses
1/2 tbsp vanilla extract
2 tsp cinnamon powder
1 tsp baking soda
1 3/4 cup all-purpose flour
2 cups rolled oats
For the icing:
2 cups powdered sugar
3 tbsp milk (any kind you like)
1/2 tsp vanilla extract
Directions
- 1. Get your oats ready.
Use a food processor to pulse the oats. You want a mix of oat flour and small oat bits. Just pulse for about 10 seconds. Set this aside. - 2. Cream the butter and sugar.
In a large bowl, beat together the softened butter and brown sugar using an electric mixer until it’s creamy. - 3. Add the wet ingredients.
Mix in the eggs, vanilla, and molasses. Make sure everything is nice and smooth. - 4. Add the spices and oats.
Mix in the cinnamon and baking soda. Then stir in your pulsed oats. - 5. Add the flour.
Add the flour a little at a time (about 1/2 cup at a time) on low speed. Mix just until the flour disappears into the dough. - 6. Chill the dough.
Pop the dough in the fridge for at least 1 hour. This helps the cookies bake better and keeps them from spreading too much. - 7. Shape the cookies.
Scoop 1-inch balls of dough, roll them in your hands, and place them 2–3 inches apart on a parchment-lined baking sheet. - 8. Bake.
Bake at 350°F for 10–12 minutes, until the edges turn golden brown. Let them cool completely. - 9. Make the icing.
Mix powdered sugar, milk, and vanilla in a small bowl until smooth. - 10. Ice the cookies.
Flip the cookies upside down and dip the tops into the icing. Place them back on the parchment paper. - 11. Let the icing set.
Refrigerate the cookies for 10 minutes so the icing hardens a bit. Then store them in an airtight container.
Notes
- Don’t skip chilling the dough! It helps the cookies hold their shape and keeps them from turning into puddles in the oven.
- Measure flour carefully. Too much can make cookies dry.
- Don’t overmix. Especially after adding flour just mix until combined.
- Don’t overcrowd your pan. These cookies spread, so give them space to breathe!
Serving Suggestions
- These cookies go perfectly with a cold glass of milk or a cozy mug of hot chocolate.
- Want to be fancy? Stack a few and tie them with ribbon for a cute gift!
- Make ice cream sandwiches with vanilla or cinnamon ice cream between two cookies. Yum!
Fun Fact
Did you know oatmeal cookies were actually inspired by Scottish oatcakes? They became popular in the U.S. during the early 1900s and have been a favorite ever since!
Conclusion
These iced oatmeal cookies are the perfect blend of chewy, spiced, and sweet. Whether you’re baking for a party or just for fun, they’ll be a total crowd-pleaser. I hope you enjoy making (and eating!) them as much as I do. Happy baking!
