How long does it take to make Sourdough Sugar Cookie Bars?

About 55 minutes in total: 20 minutes of prep and 35 minutes of cooking.

How many servings does this Sourdough Sugar Cookie Bars recipe make?

This recipe makes 9 servings as written; ingredient quantities on this page can be scaled.

Where does this Sourdough Sugar Cookie Bars recipe come from?

It was shared on healingslice.com. ReelsMeals structured the original post into this step-by-step card; the original is linked above.

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Sourdough Sugar Cookie Bars – 55-Minute Recipe

Name: Sourdough Sugar Cookie Bars – 55-Minute Recipe
Prep time: 20 min
Cook time: 35 min
Total time: 55 min
Yield: 9 servings
Ingredients: 141 g unsalted butter; 150 g sugar; 1 egg; 100 g sourdough discard; 12 g vanilla extract; 140 g all-purpose flour; 3 g baking powder; 2 g salt; 3 g cornstarch; 80 g rainbow sprinkles; 170-180 g powdered sugar; 30-45 g heavy cream; 1 drop red food dye

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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Sourdough Sugar Cookie Bars – 55-Minute Recipe

Prep Time

20 min

Cook Time

35 min

Servings

About this saved recipe

Source-aware card

ReelsMeals turns healingslice.com into a kitchen-friendly checklist while keeping the original source attached.

Cooking context

55 min estimated total time for 9 servings.

Explore related saves

Dessert sourdough sugar cookie bars sweet treats

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

1
Preheat the oven to 350°F (347°F). Line a 9x9 inch (or 8x8-inch) baking pan with parchment paper.
2
Cream 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.
3
Add the egg, sourdough starter, and vanilla extract to the bowl. Mix until well combined and smooth.
4
In a separate bowl, whisk together the flour, baking powder, salt, and cornstarch.
5
Gradually mix the dry ingredients into the wet mixture, stirring just until combined. Be careful not to overmix.
6
Fold in the sprinkles using a spatula, making sure they're evenly distributed throughout the dough.
7
Spread 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.
8
Bake 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.
9
Let the bars cool completely in the pan before frosting.
10
To make the frosting, combine the powdered sugar, heavy cream, and vanilla extract in a bowl. Mix until smooth and creamy.
11
Add the red food dye to the frosting and mix until the desired color is achieved.
12
Spread the frosting over the cooled bars and sprinkle with additional rainbow sprinkles if desired.

Helpful tips while cooking

AI-assisted notes grounded in this recipe's ingredients, timings, and method—not additional creator instructions.

Cream butter and sugar thoroughly

Beat the butter and sugar together for 2–3 minutes until light and fluffy before adding other ingredients.

Cool bars completely before frosting

Allow the baked bars to cool fully in the pan before spreading the frosting to prevent it from melting.

Adjust bake time for pan size

If using an 8x8‑inch pan, expect a slightly longer bake than the 28–35 minutes listed for a 9x9 pan.

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