Oatmeal Chocolate Chip Cookie Bars Recipe
Introduction
Oatmeal Chocolate Chip Cookie Bars bring together the chewy goodness of oats with rich, melty chocolate chips in a convenient bar form. These bars are perfect for a quick snack, lunchbox treat, or a simple dessert that everyone will love.

Ingredients
- 1 cup butter (227g), room temperature
- 1 cup light brown sugar (220g), packed
- 1/2 cup granulated sugar (100g)
- 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 (188g)
- 2 cups old-fashioned rolled oats (170g)
- 2 cups chocolate chips (340g), semi-sweet, milk chocolate, or a mix
Instructions
- Step 1: Preheat your oven to 350°F (180°C). Lightly grease a 9 x 13 inch pan or line it with parchment paper for easy removal.
- Step 2: In a large mixing bowl, beat together the butter, brown sugar, and granulated sugar until the mixture is smooth and light in color.
- Step 3: Add the eggs one at a time, mixing well after each addition, then stir in the vanilla extract.
- Step 4: In a separate bowl, whisk together the salt, baking soda, baking powder, flour, and rolled oats.
- Step 5: Gradually add the dry ingredients to the butter mixture and stir until combined. Fold in the chocolate chips evenly.
- Step 6: Spread the batter evenly into the prepared pan, pressing it down gently.
- Step 7: Bake for 25 to 30 minutes, or until the bars turn golden brown on top. Allow them to cool completely in the pan before cutting into bars.
Tips & Variations
- For extra texture, try adding chopped nuts like walnuts or pecans along with the chocolate chips.
- You can swap old-fashioned oats for quick oats if you prefer a softer texture.
- Use a mix of semi-sweet and milk chocolate chips to balance sweetness and richness.
- Press the batter firmly into the pan to ensure the bars hold together well after baking.
Storage
Store these cookie bars in an airtight container at room temperature for up to 5 days. For longer storage, keep them in the refrigerator for up to 2 weeks or freeze for up to 3 months. Reheat slightly in the microwave or enjoy them cold.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use margarine instead of butter?
Butter is recommended for best flavor and texture, but margarine can be substituted if needed. Keep in mind the taste and consistency may be slightly different.
How do I make the bars more chewy?
Using old-fashioned oats rather than quick oats helps maintain chewiness. Also, be careful not to overbake—the bars should be just set and golden for the best chewy texture.
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Oatmeal Chocolate Chip Cookie Bars Recipe
- Total Time: 40-45 minutes
- Yield: 24 bars 1x
Description
These Oatmeal Chocolate Chip Cookie Bars combine the chewy texture of rolled oats with sweet, melty chocolate chips for a delicious dessert that’s easy to make. With a soft, buttery base and the perfect balance of brown and granulated sugar, these bars are ideal for satisfying your cookie cravings in a larger, shareable format.
Ingredients
Main Ingredients
- 1 cup butter (227g), room temperature
- 1 cup light brown sugar (220g), packed
- 1/2 cup granulated sugar (100g)
- 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 (188g)
- 2 cups old-fashioned rolled oats (170g)
- 2 cups chocolate chips (340g) semi-sweet, milk chocolate, or a combination
Instructions
- Preheat Oven: Preheat the oven to 350°F (180°C). Lightly grease a 9 x 13 inch pan with cooking spray or line it with parchment paper to prevent sticking.
- Beat Butter and Sugars: In a large mixing bowl, beat together the room temperature butter, light brown sugar, and granulated sugar until the mixture is smooth and light in color, creating a creamy base.
- Add Eggs and Vanilla: Add the eggs one at a time to the butter and sugar mixture, mixing thoroughly after each addition to ensure even incorporation. Then stir in the vanilla extract for flavor.
- Mix Dry Ingredients: In a separate medium bowl, whisk together the salt, baking soda, baking powder, all-purpose flour, and old-fashioned rolled oats until evenly combined.
- Combine Ingredients: Gradually add the dry ingredient mixture into the creamed wet mixture, stirring until just combined. Carefully fold in the chocolate chips to distribute them evenly throughout the batter.
- Bake the Bars: Press the cookie dough evenly into the prepared 9 x 13 inch pan. Bake in the preheated oven for 25 to 30 minutes or until the top is golden brown and a toothpick inserted in the center comes out clean.
- Cool and Serve: Remove the pan from the oven and allow the cookie bars to cool completely in the pan before cutting into bars to ensure they hold their shape.
Notes
- Using room temperature butter ensures it creams properly with the sugars for a better texture.
- You can mix semi-sweet and milk chocolate chips for varied sweetness.
- Make sure not to overbake; bars should be golden but still soft inside for the best chewiness.
- Line your baking pan with parchment paper for easy removal and cleanup.
- Store bars in an airtight container at room temperature for up to 5 days, or freeze for longer storage.
- Prep Time: 15 minutes
- Cook Time: 25-30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Keywords: oatmeal cookie bars, chocolate chip cookie bars, easy dessert bars, baked cookie bars, chewy oatmeal bars

