Sourdough Sugar Cookie Bars
These soft and chewy sourdough sugar cookie bars are topped with a rich, creamy frosting and have the perfect balance of tang and sweetness in every bite. The sourdough discard adds a unique flavor and texture to the bars, making them a delicious twist on traditional sugar cookie bars.
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Prep Time
20 min
Cook Time
35 min
Servings
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Cooking context
55 min estimated total time for 9 servings.
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Ingredients
- 5 oz unsalted butter
- 5 3/10 oz sugar
- 1 egg
- 3 1/2 oz sourdough discard
- 0.42 oz vanilla extract
- 4 9/10 oz all-purpose flour
- 0.11 oz baking powder
- 0.07 oz salt
- 0.11 oz cornstarch
- 2 4/5 oz rainbow sprinkles
- 6 oz powdered sugar
- 1 1/10 oz heavy cream
- 1 drop red food dye
Instructions
- 1Preheat the oven to 350°F (347°F). Line a 9x9 inch (or 8x8-inch) baking pan with parchment paper.
- 2Cream the butter and sugar together in a large bowl until light and fluffy (about 2-3 minutes). You can use a hand mixer or stand mixer for this step.
- 3Add the egg, sourdough starter, and vanilla extract to the bowl. Mix until well combined and smooth.
- 4In a separate bowl, whisk together the flour, baking powder, salt, and cornstarch.
- 5Gradually mix the dry ingredients into the wet mixture, stirring just until combined. Be careful not to overmix.
- 6Fold in the sprinkles using a spatula, making sure they're evenly distributed throughout the dough.
- 7Spread the dough evenly into the prepared baking pan. Use a spatula or your hands to press it into the corners and smooth the top. Note: this is a wetter sugar cookie bar dough, this is normal. It helps achieve optimal texture.
- 8Bake for 28-35 minutes, or until the edges are lightly golden and a toothpick inserted into the center comes out clean. Note: if using an 8x8 inch pan they may need a little longer to bake.
- 9Let the bars cool completely in the pan before frosting.
- 10To make the frosting, combine the powdered sugar, heavy cream, and vanilla extract in a bowl. Mix until smooth and creamy.
- 11Add the red food dye to the frosting and mix until the desired color is achieved.
- 12Spread the frosting over the cooled bars and sprinkle with additional rainbow sprinkles if desired.