Iced Oatmeal Cookie Bar Recipe
If you’re looking for a delightful treat that brings warmth and comfort, then this Iced Oatmeal Cookie Bar Recipe is just what you need. These bars are not only packed with flavor but also have a lovely texture that makes them a favorite at any gathering. Whether it’s a busy weeknight or a family get-together, these cookie bars are sure to be the star of the show!
What makes this recipe even more special is how easy it is to whip up. You’ll find that the ingredients are simple and wholesome, making it perfect for both seasoned bakers and those new to the kitchen. Plus, they can be made ahead of time, allowing you to enjoy your time with loved ones while indulging in these sweet treats.
Why You’ll Love This Recipe
- Quick and easy: With just a handful of steps, you can have these delicious bars ready in no time!
- Family-friendly appeal: Everyone loves oatmeal cookies, and turning them into bars makes sharing (or sneaking seconds) even easier.
- Make-ahead convenience: Bake them in advance and store them for when cravings hit or guests arrive.
- Irresistibly delicious: The combination of oats, spices, and icing creates a flavor explosion that will leave everyone wanting more!

Ingredients You’ll Need
Gathering the ingredients for this Iced Oatmeal Cookie Bar Recipe is part of the fun! You’ll find that they are all simple and wholesome, making it easy to create something delicious. Here’s what you’ll need:
For the Cookie Bars
- Unsalted Butter: 1 cup (2 sticks or 226g), softened to room temperature
- Light Brown Sugar: 1 cup (200g), packed
- Granulated Sugar: 1/2 cup (100g)
- Large Eggs: 2
- Vanilla Extract: 2 teaspoons
- All-Purpose Flour: 1 1/2 cups (180g)
- Baking Soda: 1 teaspoon
- Ground Cinnamon: 1 1/2 teaspoons
- Ground Nutmeg: 1/2 teaspoon (optional, but highly recommended)
- Salt: 1/2 teaspoon
- Old-Fashioned Rolled Oats: 3 cups (270g) (not instant or quick-cooking)
For the Icing
- Powdered Sugar: 2 cups (240g), sifted
- Milk or Cream: 3-4 tablespoons (whole milk or heavy cream recommended for richness)
- Vanilla Extract: 1 teaspoon
- Pinch of Salt: (optional, to balance sweetness)
Variations
This Iced Oatmeal Cookie Bar Recipe is wonderfully flexible! Feel free to get creative with your additions or substitutions. Here are some ideas:
- Add nuts: Toss in some chopped walnuts or pecans for an extra crunch.
- Mix in dried fruit: Dried cranberries or raisins can add a nice sweetness and chewiness.
- Change up the spices: Experiment with different spices like ginger or cloves for a unique twist.
- Try different toppings: Instead of icing, consider drizzling melted chocolate on top for a decadent treat.
How to Make Iced Oatmeal Cookie Bar Recipe
Step 1: Cream the Butter and Sugars
Start by creaming together the softened butter, light brown sugar, and granulated sugar in a large mixing bowl. This step is crucial as it incorporates air into the mixture, creating a light texture in your cookie bars. Use an electric mixer on medium speed until everything is well combined and fluffy.
Step 2: Add Eggs and Vanilla
Next, add in the eggs one at a time along with the vanilla extract. Mixing well after each addition ensures that everything blends beautifully. The eggs provide moisture and structure to your bars while the vanilla enhances their flavor.
Step 3: Combine Dry Ingredients
In another bowl, whisk together the all-purpose flour, baking soda, ground cinnamon, ground nutmeg (if using), and salt. This step helps evenly distribute the leavening agent and spices throughout your mixture. Gradually add this dry mixture to your wet ingredients while stirring gently until just combined—don’t overmix!
Step 4: Stir in Rolled Oats
Gently fold in the old-fashioned rolled oats until they’re evenly distributed throughout the dough. They’re what give these cookie bars their signature chewy texture!
Step 5: Bake
Spread the dough evenly into a greased baking pan. Bake in a preheated oven at 350°F (175°C) for about 25-30 minutes or until golden brown around the edges. Keep an eye on them; you want them just set but still soft in the center.
Step 6: Prepare the Icing
While your cookie bars cool down, whisk together sifted powdered sugar, milk or cream, vanilla extract, and a pinch of salt until smooth. Adjust consistency as needed by adding more milk or powdered sugar.
Step 7: Ice Your Bars
Once cooled completely, pour or spread your icing over the top of your cookie bars. Let it set before slicing into squares—this will help create clean edges.
These Iced Oatmeal Cookie Bars are perfect for any occasion! Enjoy sharing them with friends and family—you might just find they become a beloved favorite too!
Pro Tips for Making Iced Oatmeal Cookie Bar Recipe
Making these iced oatmeal cookie bars is a delightful experience, and a few tips can help you achieve the best results!
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Use room temperature ingredients: Ingredients like butter and eggs blend more smoothly when they’re at room temperature. This ensures a better texture in your cookie bars.
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Don’t skip the chilling time: Allowing the dough to chill for about 30 minutes before baking helps the flavors meld together and makes it easier to handle. It also helps prevent spreading, resulting in thick, chewy bars.
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Sift your dry ingredients: Sifting flour, baking soda, and spices helps eliminate lumps and ensures even distribution throughout the mixture. This can lead to a more consistent texture in your finished bars.
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Adjust sweetness if desired: Feel free to reduce the sugar slightly if you prefer less sweetness. The oats and icing will still contribute to the overall flavor.
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Store properly: Keep your iced oatmeal cookie bars in an airtight container at room temperature for up to a week. This keeps them fresh and soft!
How to Serve Iced Oatmeal Cookie Bar Recipe
These iced oatmeal cookie bars are not only delicious but also versatile in how you can present them! Whether you’re serving them at a gathering or enjoying a quiet afternoon treat, here are some lovely ideas.
Garnishes
- Chopped nuts: Sprinkle some chopped walnuts or pecans on top of the icing for added crunch and flavor.
- Shredded coconut: A light dusting of unsweetened shredded coconut can give your bars a tropical twist.
- Cinnamon sprinkle: A gentle sprinkle of cinnamon on top of the icing adds warmth and enhances the overall spiced flavors.
Side Dishes
- Fresh fruit salad: A colorful mix of seasonal fruits provides a refreshing contrast to the sweetness of the cookie bars. Berries, melons, and citrus work beautifully together.
- Vanilla yogurt: Creamy vanilla yogurt serves as a perfect dip or side that complements the flavors of your iced oatmeal cookie bars while adding protein.
- Herbal tea: A warm cup of herbal tea can enhance your dessert experience, balancing out the sweetness with its soothing flavors.
- Milk or plant-based milk: Enjoying these bars with cold milk (or a dairy-free alternative) is a classic pairing that brings out the rich taste of oats and icing.
Enjoy making and sharing these wonderful iced oatmeal cookie bars! They’re sure to be a hit at any occasion.

Make Ahead and Storage
This Iced Oatmeal Cookie Bar Recipe is perfect for meal prep, allowing you to enjoy delicious treats throughout the week. These bars store well and can be made ahead of time, making them a convenient option for snacks or desserts.
Storing Leftovers
- Allow the bars to cool completely before storing.
- Cut into squares or bars and place them in an airtight container.
- Store at room temperature for up to 3 days or in the refrigerator for a week.
Freezing
- Wrap individual bars tightly in plastic wrap or aluminum foil.
- Place wrapped bars in a freezer-safe container or bag.
- Freeze for up to 3 months. Thaw at room temperature before serving.
Reheating
- To enjoy warm, preheat your oven to 350°F (175°C).
- Place bars on a baking sheet and cover with foil.
- Heat for about 10-15 minutes until warmed through.
FAQs
Here are some common questions that may help you with your Iced Oatmeal Cookie Bar Recipe!
How long do I need to chill the iced oatmeal cookie bars?
For the best results, chill the iced oatmeal cookie bars for at least 30 minutes after icing. This allows the frosting to set properly and makes cutting easier.
Can I use quick oats for this iced oatmeal cookie bar recipe?
It’s best to use old-fashioned rolled oats for this iced oatmeal cookie bar recipe. Quick oats can change the texture and make the bars mushy.
What can I substitute if I don’t have milk for the icing?
If you don’t have milk on hand, you can use almond milk or any plant-based milk as a substitute in your icing without compromising taste.
Are these iced oatmeal cookie bars suitable for kids?
Absolutely! These iced oatmeal cookie bars are not only delicious but also easy to make together with kids. They’ll love helping out in the kitchen!
Final Thoughts
I truly hope you enjoy making this Iced Oatmeal Cookie Bar Recipe as much as I do! It’s a delightful treat that brings warmth and joy, perfect for sharing with friends and family. Whether you’re enjoying them as an afternoon snack or serving them at gatherings, these bars are sure to please everyone. Happy baking, and may your kitchen be filled with sweet aromas!
Iced Oatmeal Cookie Bar Recipe
If you’re searching for a comforting and delicious treat, look no further than this Iced Oatmeal Cookie Bar Recipe! Bursting with the rich flavors of oats and warm spices, these bars make for the perfect snack or dessert. Their chewy texture paired with a sweet icing will surely be a hit at any gathering, making them an instant favorite among family and friends. Plus, they’re simple to prepare and can be made ahead of time, allowing you to enjoy quality moments with your loved ones while indulging in these delightful treats.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: Approximately 12 servings 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
- 1 cup unsalted butter (softened)
- 1 cup light brown sugar (packed)
- 1/2 cup granulated sugar
- 2 large eggs
- 2 teaspoons vanilla extract
- 1 1/2 cups all-purpose flour
- 1 teaspoon baking soda
- 1 1/2 teaspoons ground cinnamon
- 3 cups old-fashioned rolled oats
- For the icing: 2 cups powdered sugar
- 3–4 tablespoons milk
- 1 teaspoon vanilla extract
Instructions
- Cream together the softened butter, light brown sugar, and granulated sugar until fluffy.
- Add eggs one at a time along with vanilla extract; mix well.
- In another bowl, whisk together flour, baking soda, cinnamon, and salt. Gradually add to wet ingredients until just combined.
- Fold in rolled oats gently until evenly distributed.
- Spread the dough into a greased baking pan and bake at 350°F (175°C) for about 25-30 minutes or until golden brown.
- For icing, whisk powdered sugar with milk and vanilla until smooth; drizzle over cooled bars.
Nutrition
- Serving Size: 1 serving
- Calories: 200
- Sugar: 14g
- Sodium: 90mg
- Fat: 9g
- Saturated Fat: 5g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 29g
- Fiber: 2g
- Protein: 3g
- Cholesterol: 30mg
