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Cinnamon Roll Oatmeal Bars: Easy & Chewy Snack Bars

A hand holding a thick, square oatmeal bars slice topped with white vanilla icing drizzle.
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Make these Cinnamon Roll Oatmeal Bars for a quick, portable treat that tastes like your favorite morning pastry. This recipe delivers a chewy oat base with a sweet cinnamon swirl and a simple glaze, perfect for breakfast or a grab-and-go snack.

Ingredients

Scale
  • 1 1/2 cups all-purpose flour
  • 2 cups rolled oats
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1/2 cup (1 stick) unsalted butter, softened
  • 1 cup packed light brown sugar
  • 1 large egg
  • 1 teaspoon vanilla extract
  • 1/4 cup milk
  • For the Swirl: 1/2 cup packed light brown sugar
  • For the Swirl: 1 tablespoon ground cinnamon
  • For the Glaze: 1 cup powdered sugar
  • For the Glaze: 2 tablespoons milk
  • For the Glaze: 1/2 teaspoon vanilla extract

Instructions

  1. Preheat your oven to 350°F (175°C). Line a 9×13 inch baking pan with parchment paper, leaving an overhang on the sides for easy removal.
  2. In a medium bowl, whisk together the flour, rolled oats, baking soda, and salt. Set this dry mix aside.
  3. In a large bowl, cream together the softened butter and 1 cup of brown sugar until the mixture is light and fluffy. This takes about 2 minutes with an electric mixer.
  4. Beat in the egg and vanilla extract until just combined.
  5. Gradually add the dry ingredient mixture to the wet ingredients, alternating with the 1/4 cup of milk. Mix on low speed until just combined. Do not overmix the dough.
  6. In a small bowl, mix the 1/2 cup brown sugar for the swirl with the 1 tablespoon of cinnamon until uniform.
  7. Press two-thirds of the oatmeal dough evenly into the bottom of the prepared pan.
  8. Sprinkle the cinnamon-sugar mixture evenly over the pressed dough layer.
  9. Crumble the remaining one-third of the dough over the cinnamon layer.
  10. Bake for 25 to 30 minutes, or until the edges are golden brown and the center is set.
  11. While the bars cool slightly, prepare the glaze. Whisk together the powdered sugar, 2 tablespoons of milk, and 1/2 teaspoon of vanilla extract until smooth. Add more milk, a teaspoon at a time, if the glaze is too thick.
  12. Drizzle the glaze over the warm bars. Let the bars cool completely in the pan before lifting them out using the parchment overhang and cutting them into squares.

Notes

  • For a chewier bar, slightly reduce the baking time.
  • You can substitute almond butter for the butter in the base dough for a different flavor profile, adjusting the liquid slightly if needed.
  • These bars keep well in an airtight container at room temperature for up to four days, making them excellent for meal prep.

Nutrition

Find it online: https://kitchenslang.com/oatmeal-bars-cinnamon-roll-easy-chewy-snack/