Iced Oatmeal Cookie Bar Recipe
Iced Oatmeal Cookie Bar Recipe is a delightful treat that combines the comforting flavors of oatmeal cookies with a smooth, creamy icing. This recipe is perfect for various occasions, from casual gatherings to special celebrations. With its chewy texture and sweet icing, these bars stand out as a delicious dessert that everyone will love.
Why You’ll Love This Recipe
- Easy to Make: This recipe requires simple steps and minimal prep time, making it perfect for bakers of all skill levels.
- Deliciously Flavorful: The blend of cinnamon and nutmeg adds warmth, while the oats provide a hearty texture that satisfies.
- Versatile: These bars can be served warm or chilled, making them suitable for any season or occasion.
- Great for Meal Prep: You can make a batch ahead of time and store them for quick desserts throughout the week.
- Kid-Friendly: These cookie bars are not only fun to eat but also a great way to get kids involved in baking.
Tools and Preparation
Before diving into this scrumptious recipe, gather the necessary tools to ensure a smooth baking experience.
Essential Tools and Equipment
- Mixing bowls
- Measuring cups and spoons
- Baking pan (9×13 inch)
- Electric mixer
- Rubber spatula
Importance of Each Tool
- Mixing bowls: Essential for combining ingredients thoroughly without mess.
- Electric mixer: Saves time and energy when creaming butter and sugars together for the best texture.
- Baking pan: A sturdy baking pan ensures even cooking and easy removal of your cookie bars.

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). Grease or line your baking pan with parchment paper for easy removal after baking.
Step 2: Mix the Wet Ingredients
In a large mixing bowl, cream together the softened butter, light brown sugar, and granulated sugar using an electric mixer until fluffy. Add in the eggs one at a time, mixing well after each addition. Finally, stir in the vanilla extract.
Step 3: Combine Dry Ingredients
In another bowl, whisk together the all-purpose flour, baking soda, ground cinnamon, ground nutmeg (if using), and salt. Gradually add this mixture to the wet ingredients until just combined.
Step 4: Fold in Oats
Gently fold in the old-fashioned rolled oats until evenly distributed throughout the batter.
Step 5: Bake
Pour the batter into your prepared baking pan and spread it evenly. Bake in preheated oven for about 25–30 minutes or until golden brown. Allow to cool completely on a wire rack before icing.
Step 6: Prepare Icing
In a separate bowl, whisk together powdered sugar, milk or cream, vanilla extract, and a pinch of salt until smooth. Adjust consistency with more milk if needed.
Step 7: Ice Your Bars
Once cooled, spread the icing over your oatmeal cookie bars evenly. Allow it to set before cutting into squares or rectangles for serving.
Enjoy your Iced Oatmeal Cookie Bars as a delightful snack or dessert!
How to Serve Iced Oatmeal Cookie Bar Recipe
Serving your Iced Oatmeal Cookie Bars is a delightful experience. These bars are perfect for various occasions, from casual gatherings to more formal events. Here are some creative ways to serve them.
Enjoy with a Glass of Milk
- A classic pairing, milk complements the sweetness of the bars and balances the flavors perfectly.
Add a Scoop of Ice Cream
- Top your cookie bars with a scoop of vanilla or caramel ice cream for an indulgent dessert.
Pair with Fresh Fruit
- Serve alongside fresh berries or sliced bananas for a refreshing contrast to the rich cookie bars.
Create a Dessert Platter
- Arrange the iced oatmeal cookie bars with assorted treats like brownies and fruit tarts for a stunning dessert display.
Pack for Lunchbox Treats
- Cut them into smaller pieces and pack them in lunchboxes as a sweet surprise for kids and adults alike.
Serve at Coffee Breaks
- These cookie bars make an excellent treat during coffee breaks at work or gatherings, offering both comfort and satisfaction.
How to Perfect Iced Oatmeal Cookie Bar Recipe
Perfecting your Iced Oatmeal Cookie Bars can elevate this treat to new heights. Here are some tips to ensure they come out delicious every time.
- Use Room Temperature Ingredients: Make sure your butter and eggs are at room temperature for better mixing and texture.
- Measure Ingredients Accurately: Use a kitchen scale for precise measurements, especially for flour and oats, to achieve the right consistency.
- Don’t Overmix: Combine ingredients until just mixed; overmixing can lead to tough bars.
- Cool Before Icing: Allow the cookie bars to cool completely before adding icing to prevent it from melting.
- Experiment with Toppings: Feel free to add chocolate chips or nuts into the batter for extra flavor and texture.
- Store Properly: Keep the iced cookie bars in an airtight container at room temperature or in the fridge for longer freshness.
Best Side Dishes for Iced Oatmeal Cookie Bar Recipe
While these cookie bars are delicious on their own, pairing them with side dishes can enhance your dessert experience. Here are some great options:
- Fresh Fruit Salad: A mix of seasonal fruits adds brightness and balances the sweetness of the cookies.
- Yogurt Parfait: Layer yogurt with granola and fruits to create a creamy, crunchy side that pairs well with the soft bars.
- Chilled Whipped Cream: Lightly sweetened whipped cream adds a fluffy texture that complements the rich cookie bars.
- Chocolate Dipping Sauce: Melted chocolate sauce provides an indulgent way to enjoy each bite of the oatmeal bar.
- Nut Butter Dip: Serve with almond or peanut butter for an added nutty flavor that contrasts nicely with sweetness.
- Cinnamon Sugar Tortilla Chips: Crunchy chips coated in cinnamon sugar offer a fun textural contrast when served alongside the bars.
- Coffee or Tea: A warm beverage enhances flavors and provides a comforting experience while enjoying these dessert bars.
- Caramel Sauce Drizzle: A drizzle of warm caramel sauce elevates each bite, making it even more decadent.
Common Mistakes to Avoid
When making the Iced Oatmeal Cookie Bar Recipe, it’s easy to make some common mistakes. Here are a few to keep in mind:
- Incorrect butter temperature: Using cold butter can lead to dense bars. Always ensure your butter is softened to room temperature for the best results.
- Not measuring ingredients accurately: Baking is a science; improper measurements can affect texture and flavor. Use a kitchen scale or measuring cups and spoons for precision.
- Skipping the chilling time: Chilling the dough helps the bars hold their shape during baking. Don’t rush this step for better results.
- Overmixing the batter: Overmixing can result in tough cookie bars. Mix just until combined for a softer texture.
- Ignoring ingredient substitutions: Substituting ingredients without understanding their role can alter the outcome. Stick to suggested swaps for optimal taste.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container for up to 5 days.
- Place parchment paper between layers to prevent sticking.
Freezing Iced Oatmeal Cookie Bar Recipe
- Wrap individual bars in plastic wrap and then place them in a freezer-safe bag.
- They can be stored in the freezer for up to 3 months.
Reheating Iced Oatmeal Cookie Bar Recipe
- Oven: Preheat to 350°F (175°C), place bars on a baking sheet, and heat for about 10 minutes.
- Microwave: Heat individual bars on a microwave-safe plate for 15-20 seconds until warm.
- Stovetop: Place bars in a skillet over low heat, cover, and warm gently until heated through.
Frequently Asked Questions
Here are some common questions about the Iced Oatmeal Cookie Bar Recipe:
Can I use quick oats instead of rolled oats?
Using quick oats will change the texture of your cookie bars. Old-fashioned rolled oats give a chewier consistency.
How long do these cookie bars last?
They last up to 5 days in the refrigerator or up to 3 months if frozen properly.
Can I customize the frosting?
Absolutely! Feel free to add flavors like almond extract or citrus zest to enhance your frosting.
Is there a vegan version of this recipe?
Yes! You can substitute unsalted butter with coconut oil and use flax eggs instead of regular eggs.
What can I serve with these cookie bars?
These delicious cookie bars pair well with coffee, tea, or even a scoop of vanilla ice cream!
How do I make these cookie bars healthier?
Consider using whole wheat flour and reducing sugar slightly while adding nuts or dried fruits for added nutrition.
Final Thoughts
The Iced Oatmeal Cookie Bar Recipe is not only delicious but also highly versatile. Whether you enjoy them as an afternoon snack or dessert, they offer endless customization options. Try adding nuts, dried fruits, or even different spices to make them your own!
Iced Oatmeal Cookie Bar Recipe
Indulge in the delightful Iced Oatmeal Cookie Bar Recipe, a sweet treat that beautifully marries the comforting flavors of traditional oatmeal cookies with a smooth, creamy icing. These chewy bars are perfect for any occasion, from casual get-togethers to festive celebrations. With a warm blend of spices and hearty oats, they provide a satisfying texture and flavor that everyone will adore. Enjoy them warm or chilled—either way, they’re sure to be a hit!
- 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 to room temperature
- 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
- 1/2 teaspoon ground nutmeg (optional)
- 1/2 teaspoon salt
- 3 cups old-fashioned rolled oats
- 2 cups powdered sugar, sifted
- 3–4 tablespoons milk or cream
- 1 teaspoon vanilla extract (for icing)
- Pinch of salt (for icing)
Instructions
- Preheat your oven to 350°F (175°C) and prepare a 9×13 inch baking pan by greasing it or lining it with parchment paper.
- In a mixing bowl, cream together softened butter, light brown sugar, and granulated sugar until fluffy. Add eggs one at a time and mix well after each addition. Stir in vanilla extract.
- In another bowl, whisk together flour, baking soda, cinnamon, and salt. Gradually mix this into the wet ingredients until just combined.
- Gently fold in old-fashioned rolled oats until evenly distributed.
- Pour the batter into the prepared pan and bake for 25–30 minutes or until golden brown. Allow cooling completely before icing.
- For the icing, whisk together powdered sugar, milk or cream, vanilla extract, and a pinch of salt until smooth; adjust consistency as needed.
- Spread icing evenly over cooled bars and allow to set before cutting into squares.
Nutrition
- Serving Size: 1 cookie bar (50g)
- Calories: 215
- Sugar: 14g
- Sodium: 95mg
- Fat: 9g
- Saturated Fat: 5g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 33g
- Fiber: 1g
- Protein: 2g
- Cholesterol: 35mg