Introduction

There’s something undeniably comforting about the classic combination of oats and raisins. These oatmeal raisin cookie bars take that beloved duo and transform it into a delightful, easy-to-make treat that’s perfect for any occasion. Whether you’re a seasoned baker or just starting out, this recipe offers a straightforward approach to creating a dessert that’s both nostalgic and satisfying.​

What sets these bars apart is their chewy texture, rich flavor, and the convenience of baking them all at once—no need to scoop individual cookies. Plus, with the option to add a maple cinnamon frosting, you can elevate these bars to a whole new level of indulgence.​

Why You’ll Love This Recipe

Make-Ahead: These bars store well, making them perfect for meal prep or gifting.​

Time-Saving: Bake the entire batch in one pan, cutting down on prep and cleanup time.

Beginner-Friendly: Simple ingredients and straightforward steps make this recipe accessible to all skill levels.

Customizable: Easily adapt the recipe to suit dietary preferences or to incorporate your favorite add-ins.

Ingredients & Substitutions

For the Cookie Bars:

• 1 ½ cups all-purpose flour
• 1 teaspoon baking soda
• ¾ teaspoon ground cinnamon
• ½ teaspoon fine salt
• ¾ cup unsalted butter, room temperature
• ¾ cup packed light brown sugar
• 2 large eggs, room temperature
• 2 teaspoons vanilla extract
• 2 cups quick-cooking oats
• 1 cup raisins​

For the Frosting (Optional):

• ½ cup unsalted butter, room temperature
• 1 ½ cups powdered sugar
• 1 tablespoon maple syrup
• 1 to 2 tablespoons heavy cream, room temperature
• ½ teaspoon ground cinnamon
• ¼ teaspoon maple extract (optional)​

Substitutions:

• Flour: Use a gluten-free all-purpose flour blend for a gluten-free version.
• Butter: Substitute with plant-based butter for a dairy-free option.
• Eggs: Replace with flax eggs (1 tablespoon ground flaxseed mixed with 3 tablespoons water per egg) for a vegan alternative.
• Raisins: Swap with dried cranberries, chopped dates, or chocolate chips for variety.​

Step-by-Step Cooking Instructions

1. Preheat the Oven: Set your oven to 350°F (175°C). Line a 9×9-inch baking pan with parchment paper, leaving an overhang on the sides for easy removal.​
2. Prepare Dry Ingredients: In a medium bowl, whisk together the flour, baking soda, cinnamon, and salt. Set aside.​
3. Cream Butter and Sugar: In a large bowl, beat the butter and brown sugar together until light and fluffy, about 2-3 minutes.​
4. Add Eggs and Vanilla: Beat in the eggs one at a time, ensuring each is fully incorporated before adding the next. Mix in the vanilla extract.​
5. Combine Wet and Dry Ingredients: Gradually add the dry ingredients to the wet mixture, mixing until just combined.​
6. Fold in Oats and Raisins: Stir in the oats and raisins until evenly distributed. The dough will be thick.​
7. Transfer to Pan: Spread the dough evenly into the prepared baking pan, pressing it down gently.​
8. Bake: Bake for 18-20 minutes, or until the edges are golden brown and a toothpick inserted into the center comes out clean.​
9. Cool: Allow the bars to cool completely in the pan on a wire rack.​
10. Prepare Frosting (Optional): In a medium bowl, beat the butter until smooth. Add powdered sugar, maple syrup, heavy cream, cinnamon, and maple extract (if using). Beat until creamy and spreadable.​12 Tomatoes
11. Frost and Serve: Once the bars are cooled, spread the frosting evenly over the top. Cut into squares and enjoy!​KJ and Company

Pro Tips & Variations

• Toasting Oats: For a nuttier flavor, toast the oats in a dry skillet over medium heat until golden and fragrant before adding them to the dough.
• Add-Ins: Incorporate chopped nuts, such as walnuts or pecans, for added texture.
• Spice It Up: Add a pinch of nutmeg or allspice for a warm, spiced flavor.
• Frosting Alternatives: Try a cream cheese frosting or a simple glaze made with powdered sugar and milk.​

Serving Suggestions

These oatmeal raisin cookie bars are perfect for:​

• Dessert: Serve with a scoop of vanilla ice cream for an indulgent treat.
• Snack: Pair with a cup of coffee or tea for a satisfying afternoon pick-me-up.
• Breakfast: Enjoy a bar with a glass of milk or a smoothie for a quick breakfast on the go.​

Storage & Reheating

• Room Temperature: Store in an airtight container for up to 3 days.
• Refrigerator: Keep in the fridge for up to a week.
• Freezer: Freeze unfrosted bars for up to 3 months. Thaw overnight in the refrigerator and frost before serving.
• Reheating: Warm individual bars in the microwave for 10-15 seconds to restore their soft texture.

Nutrition Information (Per Bar)

Here’s an approximate nutritional breakdown per serving, based on a batch of 16 bars without frosting:

• Serving Size: 1 bar
• Calories: 210 kcal
• Total Fat: 9 g
• Saturated Fat: 5 g
• Unsaturated Fat: 3 g
• Trans Fat: 0 g
• Cholesterol: 35 mg
• Sodium: 95 mg
• Carbohydrates: 30 g
• Fiber: 2 g
• Sugar: 15 g
• Protein: 3 g

Nutrition Notes: Oats offer a solid source of fiber and can help with heart health. Raisins provide a boost of natural sugar and antioxidants.

FAQs

Can I make these oatmeal raisin bars ahead of time?

Yes! These bars are perfect for prepping ahead. Store them in the fridge or freezer and frost just before serving for the freshest taste.

What if I don’t have raisins?

No problem. Swap raisins with chopped dates, dried cranberries, or even mini chocolate chips if you want a different flavor.

Can I double the recipe?

Absolutely. For a larger crowd, double the ingredients and bake in a 9×13-inch pan. You may need to increase the baking time slightly—check around the 25-minute mark.

Do I have to frost them?

Not at all! The bars are delicious as-is, but the maple cinnamon frosting adds a sweet, spicy twist. You can also drizzle with a simple glaze or enjoy them plain.

Are these gluten-free?

They can be! Just make sure to use a gluten-free all-purpose flour and certified gluten-free oats.

Conclusion

These Oatmeal Raisin Cookie Bars are the kind of treat you’ll make once and crave forever. They’re chewy, golden, and full of old-fashioned flavor with a modern twist. Whether you’re baking for a holiday, a picnic, or just a cozy afternoon treat, they’re guaranteed to please.

💬 Did you make these bars? Let us know in the comments how they turned out!
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Until then—keep baking and spreading joy, one chewy square at a time!

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