Introduction
Iced oatmeal cookie bars are a delightful treat that blend the heartiness of oats with a luscious, creamy frosting. These bars are not only easy to make but also perfect for sharing at gatherings or enjoying as a cozy afternoon snack.
The combination of chewy oats, warming spices, and a sweet glaze elevates the humble cookie into a satisfying dessert. With their rich texture and inviting aroma, these bars are bound to become a favorite in your home.
Ingredients
- 1 cup all-purpose flour
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 teaspoon ground cinnamon
- 1/2 teaspoon ground nutmeg
- 1/2 cup unsalted butter, softened
- 1 cup brown sugar, packed
- 1/2 cup granulated sugar
- 1 large egg
- 1 teaspoon vanilla extract
- 2 cups old-fashioned rolled oats
- 1/2 cup raisins or chocolate chips, optional
- 1 cup powdered sugar
- 2 tablespoons milk
- 1 teaspoon vanilla extract for frosting
Directions & Preparation
- Preheat your oven to 350°F (175°C) and line a 9×13 inch baking pan with parchment paper, leaving some overhang for easy removal.
- In a medium bowl, whisk together the flour, baking soda, salt, cinnamon, and nutmeg. Set aside.
- In a large mixing bowl, cream the softened butter, brown sugar, and granulated sugar until light and fluffy, about 2-3 minutes.
- Add the egg and vanilla extract to the butter mixture, mixing well until combined.
- Gradually add the dry ingredients to the wet mixture, stirring until just incorporated. Fold in the rolled oats and add raisins or chocolate chips if desired.
- Spread the batter evenly into the prepared baking pan, smoothing the top with a spatula.
- Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted into the center comes out clean. Allow to cool in the pan on a wire rack.
- Once cooled, make the frosting by whisking together powdered sugar, milk, and vanilla extract until smooth and pourable.
- Spread the frosting over the cooled oatmeal cookie bars, then cut into squares for serving.

FAQs
What can I do if my icing is too thick?
Add a little more milk, one teaspoon at a time, to reach your desired consistency.
How do I know when my bars are done baking?
The bars are done when the edges are lightly golden and a toothpick inserted in the center comes out clean.
Can I use quick oats instead of rolled oats?
Yes, but the texture will differ; quick oats create a finer texture in the bars.
What if my cookie bars are too crumbly?
This can happen due to overbaking or not enough moisture; ensure precise measurements and bake just until set.
Can I add nuts to the recipe?
Absolutely! Chopped walnuts or pecans complement the flavors well.
How can I adjust the sweetness of the frosting?
Reduce the powdered sugar for less sweetness or add a touch more for a sweeter glaze.
Conclusion
These iced oatmeal cookie bars promise a satisfaction that goes beyond their comforting flavors. They are a simple, yet elegant treat that can bring joy to any occasion.
With just a few basic ingredients, you can create a delightful dessert that is sure to please family and friends alike. Enjoy these bars with a cup of coffee or as a sweet ending to any meal.
Recipe Card
Notes
Additional serving suggestions: pair with a crisp salad, garlic bread, or roasted seasonal vegetables for balance.
For make-ahead, prep components separately and assemble just before heating to preserve texture.
Taste and adjust with acid (lemon/vinegar) and salt right at the end to wake up flavors.