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Brown Sugar Cinnamon Shortbread Bars

by Jessie Daye

First published: August 27, 2026 | Updated: September 29, 2026

Buttery shortbread layered with a rich brown sugar cinnamon filling and finished with a simple cinnamon vanilla icing.

Brown Sugar Cinnamon Shortbread Bars

Author: Jessie Daye
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Cook 40 minutes
Total 40 minutes
Buttery shortbread layered with a rich brown sugar cinnamon filling and finished with a simple cinnamon vanilla icing.
Servings 16 bars
Course Bars, Desserts
Cuisine American

Equipment

  • Pan: 9 x 9-inch

Ingredients

Shortbread
  • 2 ½ cups 295g all-purpose flour
  • ½ teaspoon kosher salt
  • 1 cup 220g unsalted butter, softened
  • 1 cup powdered sugar
  • ½ cup brown sugar
  • 1 large egg
  • 1 teaspoon vanilla bean paste or extract
  • ½ teaspoon almond extract
Brown Sugar Cinnamon Filling
  • 1 cup 205g brown sugar, packed
  • 1 tablespoon ground cinnamon
  • 2 tablespoons all-purpose flour
  • 2 tablespoons unsalted butter softened
  • 1 teaspoon vanilla bean paste
  • ¼ teaspoon kosher salt
Cinnamon Vanilla Icing
  • 1 cup 90g powdered sugar
  • 1 teaspoon ground cinnamon
  • 1 tablespoon unsalted butter melted and cooled
  • 1 teaspoon vanilla bean paste
  • 1 –2 tablespoons milk
  • Pinch of salt
Finishing
  • Flake salt

Method

  1. Prep the pan. Preheat the oven to 325°F. Lightly grease a 9 x 9-inch baking pan and line with parchment paper, leaving enough overhang to easily lift out the bars. *This can be made in a
  2. 9”x13” dish. The bars will be thinner and the bake time should be adjusted to 30-35 minutes.
  3. Make the shortbread dough. In a medium bowl, whisk together the flour and salt.
  4. In a large bowl, beat the softened butter, powdered sugar, and brown sugar until smooth and fluffy.
  5. Add the egg, vanilla, and 1/4 teaspoon almond extract and mix until incorporated.
  6. Add the dry ingredients and mix just until a soft dough forms. Do not overmix.
  7. Form the bottom layer. Divide the dough in half. Press one half evenly into the bottom of the prepared pan. Add a top sheet of parchment paper and place the remaining dough between the bottom sheet of parchment paper and a top sheet and using the bottom of a glass press into roughly a 9 x 9-inch square. Refrigerate while preparing the filling.
  8. Make the filling. Combine the brown sugar, cinnamon, flour, softened butter, vanilla bean paste, and salt. Mix until evenly combined and the texture resembles damp sand.
  9. Sprinkle the filling evenly over the bottom layer of shortbread and gently press it down.
  10. Carefully transfer the second layer of shortbread dough over the filling. Peel away the parchment.
  11. Bake for 40–45 minutes, or until the shortbread is evenly puffed and the edges are lightly golden.
  12. Allow the bars to cool at room, then refrigerate until completely chilled and firm for about two hours.
  13. Make the icing. Whisk together the powdered sugar, cinnamon, melted butter, vanilla bean paste, salt, and 1 tablespoon milk. Add additional milk a little at a time until the icing is thick but spreadable.
  14. Spread the icing over the chilled shortbread. Allow it to set before slicing into bars. Top with flake salt.

Notes

Styling Notes

Cut into rectangles for a nostalgic brown sugar cinnamon Pop-Tart look. Spread the icing nearly to the edges while leaving a thin border of shortbread visible.

Get Creative

Sprinkle a little cinnamon over the icing before it sets for an extra cinnamon-sugar finish.

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Hi, I'm Jessie. 

I’m a Los Angeles mama, home renovator, and lifelong creative, sharing the things that make everyday life a little more beautiful. I believe food is one of the best ways to bring people together, which is why I love cooking: it turns an ordinary Tuesday into something worth remembering. From recipes I make on repeat to DIY projects, home design, and a little bit of real life in between — welcome to my corner of the internet. I’m so glad you’re here.

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