Iced Oatmeal Cookie Bar Recipe
The Iced Oatmeal Cookie Bar Recipe is a delightful treat perfect for any occasion. Whether you’re hosting a gathering or simply craving a sweet snack, these cookie bars are sure to impress. Their chewy texture combined with a rich icing makes them stand out from traditional cookies. Enjoy them at parties, as a dessert after dinner, or even as a midday pick-me-up!
Why You’ll Love This Recipe
- Easy to Make: This recipe is straightforward, perfect for both novice and seasoned bakers.
- Delicious Flavor: The combination of cinnamon, nutmeg, and oats creates a warm and inviting taste.
- Versatile Treat: Great for any occasion, from family gatherings to holiday celebrations.
- Perfectly Iced: A creamy icing adds an extra layer of sweetness that enhances the cookie bars.
- Make Ahead Option: These bars can be made in advance and stored for days without losing freshness.

Tools and Preparation
Gathering the right tools will make your baking experience smoother. Be prepared, and let’s get started on this delicious Iced Oatmeal Cookie Bar Recipe!
Essential Tools and Equipment
- Mixing bowls
- Baking pan (9×13 inch)
- Electric mixer or whisk
- Measuring cups and spoons
- Rubber spatula
Importance of Each Tool
- Mixing bowls: These are essential for combining ingredients without spills.
- Baking pan: A sturdy pan ensures even baking and easy removal of the cookie bars.
- Electric mixer or whisk: Helps achieve fluffy butter and sugar mixtures quickly.
- Rubber spatula: Perfect for scraping down the sides of your bowl and ensuring all ingredients are well-mixed.
Ingredients
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)
How to Make Iced Oatmeal Cookie Bar Recipe
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C). This ensures that your cookie bars bake evenly.
Step 2: Prepare the Baking Pan
Grease your baking pan with butter or line it with parchment paper. This prevents sticking and makes cleanup easier.
Step 3: Mix Wet Ingredients
In a large mixing bowl, combine:
Softened butter,
Light brown sugar,
Granulated sugar.
Beat together until light and fluffy. Add in the eggs one at a time, mixing well after each addition. Finally, stir in the vanilla extract.
Step 4: Combine Dry Ingredients
In another bowl, whisk together:
All-purpose flour,
Baking soda,
Ground cinnamon,
Ground nutmeg,
Salt.
Gradually add this dry mixture into the wet ingredients. Mix until just combined.
Step 5: Add Oats
Fold in the old-fashioned rolled oats using a rubber spatula. Ensure they are evenly distributed throughout the batter.
Step 6: Bake
Pour the batter into your prepared baking pan. Smooth it out evenly with your spatula. Bake in the preheated oven for about 25–30 minutes or until golden brown.
Step 7: Prepare Icing
While the bars cool, mix together:
Powdered sugar,
Milk or cream,
Vanilla extract,
Pinch of salt if desired.
Stir until smooth and creamy.
Step 8: Ice Your Bars
Once cooled, drizzle or spread the icing over the cooled cookie bars. Allow them to set before cutting into squares.
Enjoy your freshly baked treats!
How to Serve Iced Oatmeal Cookie Bar Recipe
These iced oatmeal cookie bars are a delightful treat that can be enjoyed in various ways. From casual snacking to serving at parties, here are some creative serving suggestions.
Pair with Coffee
- Enjoy these bars alongside a steaming cup of coffee for a perfect morning pick-me-up.
Add Fresh Fruit
- Serve with slices of fresh fruit like strawberries or bananas for a refreshing contrast to the sweetness.
Ice Cream Topper
- Crumble these bars over vanilla ice cream for an indulgent dessert that’s sure to impress.
Dessert Platter
- Arrange these cookie bars on a platter with other desserts for a beautiful and inviting spread.
Gift Idea
- Package them in a decorative box tied with a ribbon; they make a thoughtful homemade gift for friends and family.
How to Perfect Iced Oatmeal Cookie Bar Recipe
To ensure your iced oatmeal cookie bars turn out perfectly every time, keep these tips in mind.
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Use Room Temperature Butter: Softened butter helps create a creamy texture, ensuring even mixing and better flavor.
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Measure Flour Carefully: Use the spoon-and-level method for accurate flour measurement to prevent dense bars.
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Don’t Overmix: Stir the batter until just combined. Overmixing can lead to tough cookie bars.
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Chill the Dough: If you have time, chilling the dough before baking enhances the flavors and helps prevent spreading.
Best Side Dishes for Iced Oatmeal Cookie Bar Recipe
If you’re looking to complement your iced oatmeal cookie bars with some delicious side dishes, consider these options. They enhance your dessert experience and create a well-rounded meal.
- Vanilla Ice Cream: A classic pairing that adds creaminess and balances the sweetness of the bars.
- Fruit Salad: A vibrant mix of seasonal fruits adds freshness and color to your dessert table.
- Whipped Cream: Light and fluffy, whipped cream is perfect for dolloping on top of each cookie bar slice.
- Chocolate Sauce: Drizzle chocolate sauce over the bars for an extra layer of flavor that chocolate lovers will adore.
- Coffee or Tea: A warm beverage is ideal for enjoying alongside your cookies; it enhances flavors beautifully.
- Cheese Platter: For an unconventional twist, serve with mild cheeses that can counterbalance the sweetness of the bars.
Common Mistakes to Avoid
Making the Iced Oatmeal Cookie Bar Recipe can be a delightful experience, but there are common pitfalls to watch out for.
- Using instant oats: Instant or quick-cooking oats will not yield the same chewy texture. Always opt for old-fashioned rolled oats for the best results.
- Skipping the sifting: Not sifting powdered sugar can lead to a lumpy icing. Sift thoroughly before mixing to achieve a smooth consistency.
- Overbaking: Baking too long can dry out your bars. Keep an eye on them and test for doneness a few minutes early.
- Not letting it cool: Cutting into warm bars can cause them to crumble. Allow them to cool completely before slicing for neat pieces.
- Ignoring ingredient temperature: Using cold butter or eggs can affect the batter’s texture. Ensure all ingredients are at room temperature for optimal mixing.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container for up to 5 days.
- Separate layers with parchment paper to prevent sticking.
Freezing Iced Oatmeal Cookie Bar Recipe
- Wrap tightly in plastic wrap and then place in a freezer-safe bag.
- Can be frozen for up to 3 months.
Reheating Iced Oatmeal Cookie Bar Recipe
- Oven: Preheat your oven to 350°F (175°C) and heat bars for about 10 minutes until warm.
- Microwave: Heat individual bars on high for about 15-20 seconds, checking frequently.
- Stovetop: Warm in a non-stick skillet over low heat, flipping occasionally until heated through.
Frequently Asked Questions
Here are some common questions about making the Iced Oatmeal Cookie Bar Recipe.
What makes this Iced Oatmeal Cookie Bar Recipe special?
This recipe combines wholesome oats with rich icing, creating a comforting dessert that satisfies cravings.
Can I substitute ingredients in the Iced Oatmeal Cookie Bar Recipe?
Yes! You can use different sugars or milk alternatives depending on your dietary needs or preferences.
How do I know when my bar is done baking?
The edges should be lightly browned, and a toothpick inserted in the center should come out clean or with just a few crumbs.
Is it possible to make this recipe gluten-free?
You can use gluten-free flour as a substitute while ensuring that your oats are labeled gluten-free as well.
Final Thoughts
The Iced Oatmeal Cookie Bar Recipe is not only easy to prepare but also versatile! You can customize it with nuts, chocolate chips, or dried fruits. Give this comforting treat a try; it’s sure to become a family favorite!
Iced Oatmeal Cookie Bar Recipe
Iced Oatmeal Cookie Bars are a delightful and comforting treat that combines the chewy goodness of oats with a rich, creamy icing. Perfect for any occasion, these bars are easy to make and sure to impress both family and friends. The warm flavors of cinnamon and nutmeg come together beautifully in this recipe, creating a dessert that is as enjoyable on its own as it is paired with coffee or ice cream. Whether you’re hosting a gathering or simply want a sweet snack, these cookie bars are an excellent choice for satisfying your cravings.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: Serves approximately 12 bars 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
- 3 cups old-fashioned rolled oats
- For the icing: 2 cups powdered sugar, 3-4 tablespoons milk, and 1 teaspoon vanilla extract
Instructions
- Preheat oven to 350°F (175°C) and grease a 9×13 inch baking pan.
- In a mixing bowl, beat together softened butter, light brown sugar, and granulated sugar until creamy. Add eggs one at a time along with vanilla extract.
- In another bowl, whisk together flour, baking soda, cinnamon, nutmeg, and salt. Gradually add to wet ingredients until just combined. Fold in oats.
- Spread batter evenly into the prepared pan and bake for 25–30 minutes until golden brown.
- For the icing, mix powdered sugar with milk and vanilla until smooth. Once bars cool, drizzle or spread icing over the top.
Nutrition
- Serving Size: 1 bar (75g)
- Calories: 290
- Sugar: 22g
- Sodium: 210mg
- Fat: 12g
- Saturated Fat: 7g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 41g
- Fiber: 2g
- Protein: 3g
- Cholesterol: 40mg
