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Oatmeal Cookie Bars Recipe

4.7 from 108 reviews

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.

Ingredients

Scale

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

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. 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