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Easy Frosted Soft Sugar Cookie Bars

A thick, square slice of light yellow sugar cookie bars topped with generous white frosting.

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You can make these soft, sweet sugar cookie bars easily. They have the classic flavor of cut-out sugar cookies but bake in a pan, meaning no rolling or cutting is required. Top them with fluffy vanilla buttercream for a simple, crowd-pleasing dessert.

Ingredients

Scale
  • 1 cup unsalted butter, softened
  • 1 1/2 cups granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 3 cups all-purpose flour
  • 1 teaspoon baking powder
  • 1/2 teaspoon salt
  • 1/2 cup milk
  • For the Frosting:
  • 1 cup unsalted butter, softened
  • 4 cups powdered sugar
  • 1 teaspoon vanilla extract
  • 24 tablespoons milk
  • Optional: Sprinkles for decoration

Instructions

  1. Preheat your oven to 350°F (175°C). Grease and flour a 9×13 inch baking pan.
  2. In a large bowl, beat the softened butter and granulated sugar together until light and fluffy.
  3. Beat in the eggs one at a time, then mix in the vanilla extract.
  4. In a separate bowl, whisk together the flour, baking powder, and salt.
  5. Gradually add the dry ingredients to the wet ingredients, alternating with the milk, mixing until just combined. Do not overmix.
  6. Press the cookie dough evenly into the prepared 9×13 inch pan.
  7. Bake for 20 to 25 minutes, or until the edges are lightly golden. The center should look set.
  8. Let the bars cool completely in the pan on a wire rack. This step is important before frosting.
  9. To make the frosting, beat the softened butter until smooth. Gradually add the powdered sugar, beating well after each addition.
  10. Mix in the vanilla extract and 2 tablespoons of milk. Add more milk, one teaspoon at a time, until you reach a smooth, spreadable consistency.
  11. Spread the buttercream frosting evenly over the cooled cookie bars.
  12. Decorate immediately with sprinkles, if using.
  13. Once frosted, cut the bars into squares.

Notes

  • For the best soft sugar cookie bars texture, do not overbake. They should be slightly underdone when you remove them from the oven.
  • You can easily adapt these for holidays by using colored sprinkles or food coloring in the frosting.
  • These bake and store well, making them a great make ahead cookie bars option for parties.

Nutrition

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