Oatmeal Cookie Bars Recipe
Introduction
These oatmeal cookie bars are a delicious twist on the classic cookie, offering chewy oats and melty chocolate chips in every bite. Perfect for a snack or dessert, they’re easy to make and sure to please any crowd.

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 with cooking spray 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. Stir in the vanilla extract.
- Step 4: In a separate bowl, whisk together the salt, baking soda, baking powder, all-purpose flour, and rolled oats.
- Step 5: Gradually add the dry ingredients to the wet mixture, stirring until just combined. Fold in the chocolate chips evenly.
- Step 6: Press the dough evenly into the prepared pan. Bake for 25 to 30 minutes, or until the top is golden brown and a toothpick inserted comes out clean.
- Step 7: Let the bars cool completely before cutting into 24 squares to ensure they set properly.
Tips & Variations
- For extra chewiness, substitute half of the rolled oats with quick oats.
- Add 1/2 cup chopped nuts like walnuts or pecans for a crunchy texture.
- Use a mix of dark and milk chocolate chips to add depth to the flavor.
- Press the dough firmly into the pan to prevent the bars from crumbling after baking.
Storage
Store the oatmeal cookie bars covered at room temperature for up to 5 days or refrigerate for 7 to 10 days. To freeze, cool completely, then wrap the whole pan of bars in plastic wrap and foil. Freeze for up to one month. Thaw in the refrigerator before slicing.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use quick oats instead of old-fashioned rolled oats?
Yes, you can substitute quick oats, but the texture will be softer and less chewy. For best texture, use old-fashioned oats.
Why should I let the bars cool completely before cutting?
Allowing the bars to cool ensures they set properly and hold together when cut, preventing them from falling apart.
PrintOatmeal Cookie Bars Recipe
Deliciously chewy Oatmeal Cookie Bars made with butter, brown sugar, rolled oats, and a generous helping of chocolate chips. These bars are easy to prepare, baked to golden perfection, and perfect for snacking or sharing at gatherings.
- Prep Time: 15 minutes
- Cook Time: 25-30 minutes
- Total Time: 40-45 minutes
- Yield: 24 squares 1x
- Category: Dessert
- Method: Baking
- Cuisine: American
Ingredients
Wet 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
Dry Ingredients
- 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)
Add-ins
- 2 cups chocolate chips (340g), semi-sweet, milk chocolate, or a mix
Instructions
- Preheat Oven: Preheat your oven to 350°F (180°C) and 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 texture.
- Add Eggs and Vanilla: Add the eggs one at a time to the creamed butter and sugar mixture, mixing thoroughly after each addition. Then stir in the vanilla extract.
- Mix Dry Ingredients: In a separate bowl, combine the salt, baking soda, baking powder, all-purpose flour, and rolled oats. Mix well to ensure these ingredients are evenly distributed.
- Combine Mixtures: Gradually add the dry ingredients to the wet mixture, stirring until just combined. Then fold in the chocolate chips evenly throughout the batter.
- Bake: Spread and press the batter evenly into the prepared baking pan. Bake in the preheated oven for 25 to 30 minutes or until the bars turn golden brown on top.
- Cool and Serve: Allow the bars to cool completely in the pan before cutting into squares. This helps the bars set and makes cutting easier.
Notes
- Yield: Makes approximately 24 squares; serving size is 1 bar.
- Storing Instructions: Keep bars covered at room temperature for up to 5 days or refrigerate for 7-10 days.
- Freezing Instructions: After cooling completely, lift the bars from the pan using the parchment paper, wrap tightly in plastic wrap and aluminum foil, and freeze for up to one month. Thaw in the refrigerator before slicing.
- Let bars cool completely before cutting to ensure they hold their shape well.
Keywords: oatmeal cookie bars, oatmeal bars, chocolate chip bars, easy dessert bars, baked cookie bars, homemade cookie bars

