There’s something incredibly joyful about baking Oatmeal Cookie Bars. The smell wafting through the kitchen as they bake is simply irresistible! These bars combine the chewy texture of oats with the delightful sweetness of chocolate chips, creating a treat that’s not just delicious but also comforting. I mean, who can resist a warm, gooey square fresh out of the oven? With every bite, you get that perfect balance of flavors—the nuttiness from the oats, the richness from the butter, and the melty chocolate that just brings everything together. Trust me, they’re not just your average dessert; they’re a hug in bar form! Plus, they’re so easy to whip up that you can bake a batch for a last-minute gathering or just to satisfy that sweet tooth craving. You’ll want to keep this recipe close because once you try Oatmeal Cookie Bars, you’ll find yourself reaching for them time and time again. So, let’s get started and bring a little bit of joy into your kitchen!

Ingredients List
Gathering the right ingredients is key to making the most delicious Oatmeal Cookie Bars. Here’s what you’ll need:
- 1 cup butter (227 g), room temperature
- 1 cup light brown sugar (220 g), packed
- 1/2 cup granulated sugar (100 g)
- 2 large eggs
- 2 teaspoons vanilla extract
- 1/2 teaspoon salt
- 1 teaspoon baking soda
- 1 teaspoon baking powder
- 1 1/2 cups all-purpose flour (188 g)
- 2 cups old-fashioned rolled oats (170 g)
- 2 cups chocolate chips (340 g), semi-sweet, milk chocolate, or a mix
Make sure your butter is at room temperature so it creams nicely with the sugars—this step is super important for that perfect texture! And feel free to mix and match the chocolate chips to suit your taste. Whether you prefer semi-sweet, milk chocolate, or even dark chocolate, each option will make these bars delightful in its own way. Now that you’ve got your ingredients ready, let’s dive into the preparation!
How to Prepare Oatmeal Cookie Bars
Now that you’ve gathered all your ingredients, it’s time to get to the fun part—making those scrumptious Oatmeal Cookie Bars! Follow these simple steps, and you’ll be on your way to a delicious treat in no time.
Preheat and Prepare the Baking Pan
First things first, you’ll want to preheat your oven to 350°F (180°C). This is crucial because a hot oven helps the bars rise and bake evenly. While that’s warming up, grab a 9 × 13-inch baking pan. You can lightly grease it with some butter or cooking spray, or if you’re like me and want easy cleanup, line it with parchment paper. Just make sure to leave some overhang on the sides; it makes lifting the bars out a breeze once they’re cooled!
Cream the Butter and Sugars
In a large mixing bowl, toss in your room-temperature butter along with the brown sugar and granulated sugar. Now, it’s time to beat them together until the mixture is smooth and light. I like to use an electric mixer for this part, but a good ol’ wooden spoon works too if you’re feeling strong! You want it to become fluffy—think whipped honey! This step is essential because it helps create that tender texture we all love in Oatmeal Cookie Bars.
Incorporate Eggs and Vanilla
Next, add those two large eggs, but here’s the trick—add them one at a time! Mix well after each addition to ensure they’re fully incorporated. This helps keep everything nice and airy. Once the eggs are in, stir in your vanilla extract. The aroma of vanilla mixed with butter and sugar is just heavenly—trust me, it’ll make your kitchen smell amazing!
Mix Dry Ingredients
Now, grab a separate bowl and combine the salt, baking soda, baking powder, all-purpose flour, and rolled oats. This step helps distribute the leavening agents evenly throughout the batter. It’s a simple yet important part of ensuring your bars come out perfectly risen and chewy. Once everything is mixed, it’s time to bring the wet and dry ingredients together!
Combine Wet and Dry Ingredients
Slowly add the dry mixture to your butter and sugar blend. Gently mix until just combined; you don’t want to overdo it here! It’s okay if you see a few flour streaks. Finally, fold in those chocolate chips—this is where the magic happens! Feel free to use a mix of semi-sweet and milk chocolate for that perfect sweetness—you won’t regret it!
Bake and Cool
Now, press the dough evenly into the prepared pan. Make sure it’s spread out nicely so it bakes evenly! Pop it in the preheated oven and bake for about 25–30 minutes, or until you see a lovely golden brown color on top. The smell will be almost irresistible! Once they’re done, let the Oatmeal Cookie Bars cool completely in the pan before cutting them into squares. Patience is key here—it’ll be worth the wait when you take that first bite!
Why You’ll Love This Recipe
Oatmeal Cookie Bars are not just a treat; they’re a delightful experience! Here are some key benefits that make this recipe a must-try:
- Quick Preparation: With just a few simple steps, you can whip up these bars in no time. Perfect for when you’re short on time but still want something homemade!
- Chewy Texture: The combination of rolled oats and chocolate chips creates a wonderfully chewy texture that’s simply irresistible. Each bite is a perfect mix of softness and a slight crunch!
- Versatile Flavor Options: You can easily customize these bars by switching up the chocolate chips or even adding nuts, dried fruits, or spices. The possibilities are endless, making each batch unique!
- Perfect for Gatherings: Whether it’s a bake sale, picnic, or family gathering, these bars are a hit! They’re easy to cut into squares, making them a fantastic treat to share with friends and family.
Trust me, once you try making Oatmeal Cookie Bars, you’ll want to keep this recipe in your back pocket for all occasions!
Tips for Success
Getting those Oatmeal Cookie Bars just right can be a delightful adventure, and I’ve got some handy tips to help you succeed every time you bake them!
Use Room Temperature Ingredients
Make sure your butter and eggs are at room temperature before you start mixing. This step is crucial because it helps create a smooth batter that incorporates air better, resulting in those perfectly chewy bars we all love. Just take them out of the fridge about 30 minutes before you begin, and you’ll be golden!
Don’t Overmix the Batter
When combining your wet and dry ingredients, remember to mix until just combined. Overmixing can lead to tough bars due to excessive gluten development. You want to maintain that lovely chewy texture, so a few flour streaks are perfectly fine!
Check for Doneness Carefully
It’s easy to get carried away with the delicious aroma wafting through your kitchen, but be sure to check for doneness! Look for a golden brown top and the edges pulling away slightly from the pan. You can also do the toothpick test—insert one into the center, and it should come out with a few moist crumbs, not wet batter. This way, you’ll ensure your bars are perfectly baked!
Let Them Cool Completely
I know it’s tempting to dive right in, but allowing your Oatmeal Cookie Bars to cool completely in the pan is essential. This helps them set up nicely and makes cutting them into squares much easier. Plus, they’ll taste even better once they’ve cooled a bit!
Experiment with Mix-Ins
Don’t be afraid to get creative! While chocolate chips are a classic choice, you can add nuts, dried fruits, or even a sprinkle of cinnamon for an extra flavor kick. Just remember to keep the total mix-ins to about 2 cups so the bars bake properly.
With these tips in hand, you’re all set to bake the most scrumptious Oatmeal Cookie Bars! Happy baking!
Nutritional Information
Before diving into those delicious Oatmeal Cookie Bars, it’s always good to know what you’re indulging in! Keep in mind that nutritional values can vary based on the specific ingredients and brands you use, but here’s an estimated breakdown per serving (1 square):
- Calories: 255 kcal
- Sugar: 22 g
- Fat: 13 g
- Saturated Fat: 8 g
- Unsaturated Fat: 3 g
- Trans Fat: 0.3 g
- Carbohydrates: 33 g
- Fiber: 1 g
- Protein: 2 g
- Cholesterol: 36 mg
- Sodium: 182 mg
Enjoy your treats in moderation, and remember, these Oatmeal Cookie Bars are all about balance and delight! Happy snacking!
FAQ Section
Got questions about Oatmeal Cookie Bars? Don’t worry, I’ve got you covered! Here are some common inquiries and helpful answers to make your baking experience even smoother.
Can I use quick oats instead of rolled oats?
While rolled oats give these bars their chewy texture, you can use quick oats in a pinch. Just keep in mind that the texture will be a bit softer, but they’ll still taste delicious!
How should I store leftover Oatmeal Cookie Bars?
To keep your Oatmeal Cookie Bars fresh, store them in an airtight container at room temperature for up to 5 days. If you want to keep them longer, you can refrigerate them for 7–10 days or freeze them for up to a month. Just make sure they’re completely cooled before wrapping!
Can I substitute the chocolate chips?
Absolutely! Feel free to swap out the chocolate chips for your favorite mix-ins. Try nuts, dried fruits, or even butterscotch chips for a fun twist. Just remember to keep the total mix-ins to about 2 cups to maintain the right texture!
What if I don’t have brown sugar?
No brown sugar? No problem! You can use granulated sugar instead, but if you want to mimic that rich flavor, mix a tablespoon of molasses with your granulated sugar to get a similar taste and moisture level.
Can I make these Oatmeal Cookie Bars gluten-free?
Yes, you can! Just substitute the all-purpose flour with a 1:1 gluten-free flour blend. Make sure your oats are certified gluten-free, and you’re good to go. They’ll still turn out delicious!
If you have any more questions, feel free to ask! Baking should be fun and stress-free, and I’m here to help you enjoy every moment of it.
Storage & Reheating Instructions
Once you’ve baked your delicious Oatmeal Cookie Bars, you might be wondering how to keep them fresh for those sweet cravings later on. Don’t worry, I’ve got you covered with some simple storage tips!
To store your leftover Oatmeal Cookie Bars, place them in an airtight container at room temperature. They’ll stay fresh for up to 5 days, which is perfect for snacking throughout the week. Just make sure they’re completely cooled before sealing the container to prevent any sogginess.
If you want to keep them for a bit longer, you can pop them in the refrigerator. They’ll last about 7–10 days there. Just remember to cover them well to avoid any fridge odors soaking into those tasty bars!
Now, if you want to stash them for an even longer shelf life, freezing is the way to go! Wrap the cooled bars tightly in plastic wrap and then in foil, or place them in a freezer-safe container. They’ll keep well for up to a month. When you’re ready for a treat, just take out the number of squares you want, and let them thaw in the fridge overnight. You can also reheat them in the microwave for about 10-15 seconds to bring back that warm, gooey goodness.
So, whether you’re enjoying them fresh or saving some for later, these Oatmeal Cookie Bars are sure to delight each time you take a bite!
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Oatmeal Cookie Bars: 5 Irresistible Ways to Indulge
- Total Time: 45 minutes
- Yield: 24 squares 1x
- Diet: Vegetarian
Description
Oatmeal Cookie Bars are a delicious treat that combines the chewy texture of oats with the sweetness of chocolate chips.
Ingredients
- 1 cup butter (227 g), room temperature
- 1 cup light brown sugar (220 g), packed
- 1/2 cup granulated sugar (100 g)
- 2 large eggs
- 2 teaspoons vanilla extract
- 1/2 teaspoon salt
- 1 teaspoon baking soda
- 1 teaspoon baking powder
- 1 1/2 cups all-purpose flour (188 g)
- 2 cups old-fashioned rolled oats (170 g)
- 2 cups chocolate chips (340 g), semi-sweet, milk chocolate, or a mix
Instructions
- Preheat oven to 350°F (180°C). Lightly grease a 9 × 13-inch pan or line with parchment paper.
- In a large bowl, beat the butter, brown sugar, and granulated sugar until smooth and light.
- Add eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
- In a separate bowl, combine salt, baking soda, baking powder, flour, and rolled oats.
- Add the dry ingredients to the wet mixture and mix until just combined. Stir in the chocolate chips.
- Press the dough evenly into the prepared pan.
- Bake for 25–30 minutes, or until golden brown.
- Allow to cool completely before cutting into squares.
Notes
- Yield: 24 squares
- Serving Size: 1 square
- Storage: Room temperature (covered): up to 5 days
- Refrigerator: 7–10 days
- Freezing: Cool completely, wrap tightly in plastic wrap and foil, and freeze up to 1 month. Thaw in the fridge before slicing.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 square
- Calories: 255 kcal
- Sugar: 22 g
- Sodium: 182 mg
- Fat: 13 g
- Saturated Fat: 8 g
- Unsaturated Fat: 3 g
- Trans Fat: 0.3 g
- Carbohydrates: 33 g
- Fiber: 1 g
- Protein: 2 g
- Cholesterol: 36 mg
Keywords: Oatmeal Cookie Bars, dessert, chocolate chip cookies