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Iced Oatmeal Cookie Bars Recipe

4.5 from 55 reviews

These Iced Oatmeal Cookie Bars offer a delightful twist on classic oatmeal cookies with a soft, chewy texture and a sweet vanilla icing glaze. Perfect for an easy homemade treat, these bars combine wholesome oats, warm cinnamon, and a touch of molasses for depth of flavor, finished with a smooth powdered sugar coating for extra sweetness.

Ingredients

Scale

Dry Ingredients

  • 1 cup old fashioned oats
  • 1 cup + 2 tbsp all purpose flour
  • 1/2 tsp salt
  • 1 tsp cinnamon
  • 1 tsp baking soda

Wet Ingredients

  • 1 stick butter (melted and cooled)
  • 1/2 cup brown sugar
  • 1/2 cup sugar
  • 1 tsp vanilla extract
  • 1 egg
  • 1 tbsp molasses

Icing

  • 1/2 tsp vanilla extract
  • 2 tbsp milk
  • 1 cup powdered sugar

Instructions

  1. Prep the pan and oats: Preheat your oven to 350°F and line an 8×8-inch baking dish with parchment paper. Add the oats to a food processor and pulse a few times to break them up slightly – this keeps the chewy texture without turning them into oat flour.
  2. Mix the dry ingredients: Transfer the chopped oats to a medium bowl and add the all-purpose flour, salt, cinnamon, and baking soda. Stir together until well combined and set aside.
  3. Mix the wet ingredients: In a large bowl, melt the butter and let it cool for about 5 minutes. Whisk in the brown sugar and granulated sugar for approximately 30 seconds until the mixture is smooth and glossy. Add the vanilla extract, egg, and molasses and whisk until fully incorporated.
  4. Combine and bake: Add the dry ingredient mixture to the wet ingredients and gently stir with a silicone spatula or wooden spoon until a soft dough forms. Spread this dough evenly into the prepared baking dish. Bake in the preheated oven for about 25 minutes, or until the edges are golden brown and the center is set without jiggling.
  5. Cool and ice: Allow the bars to cool completely in the pan. In a medium bowl, mix together the vanilla extract, milk, and powdered sugar until a thick and smooth icing forms. Spread the icing evenly over the cooled bars. Allow the icing to set before slicing into squares and serving.

Notes

  • Pulse the oats lightly to retain chewy texture instead of finely grinding them.
  • Ensure butter is cooled to avoid cooking the egg when mixing wet ingredients.
  • Cooling the bars completely before icing prevents the glaze from melting.
  • Use parchment paper for easy removal and clean-up of bars.
  • Bars can be stored in an airtight container at room temperature for up to 3 days.

Keywords: oatmeal cookie bars, iced cookie bars, easy dessert bars, homemade cookie bars, cinnamon cookie bars