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Sourdough Sugar Cookie Bars: Sweet & Tangy Treats!

Ever notice how one bite of something sweet can zip you back to grandma’s sunny kitchen—afghans on the chair, radio playing, sugar in the air? These sourdough sugar cookie bars do that, with a TikTok glow-up. They’re cozy meets cool. Beginner-friendly. Mix, pat, bake. Soft and just a little tangy.

It’s a cozy sourdough sugar cookie bar situation that warms the soul. Just flour, butter, sugar… and a happy helping of sourdough magic. Stuff you already have. Like your favorite sugar cookie married a coffee shop bar. Full details in the blog!

This one started in my mom’s old mixing bowl—chipped rim and all—back when Saturdays meant aprons and flour dust on the floor. Now it’s my daughters making the batter. No gadgets, no fluff. Just real-deal comfort. I tested it. You’ll love the secret swirl!

Why This Recipe Shines

Classic sugar cookies are already a treat, but add sourdough discard, and they become something magical. The sourdough brings a subtle tang—just enough to make the sweetness pop, creating a flavor you didn’t know sugar cookies could have. It’s like a long hug from an old friend, with a little zing at the end. 🍪

Pro Tip: These bars are perfect for celebrating everything from cozy snow days to potlucks with friends. Plus, no rolling pins or cookie cutters needed! Just pat, bake, and enjoy.

Ingredients at a Glance

This recipe is refreshingly simple. You’ll need pantry staples like unsalted butter, sugar, and flour, plus your trusty sourdough discard. That tangy discard is the real MVP here, giving these bars just enough character—like your favorite pair of broken-in jeans but in dessert form. 😊

Pro Tip: No sourdough discard? No problem. Substitute it with 1/4 cup buttermilk if you’re in a pinch, though the flavor won’t be as unique.

IngredientSubstitution Options
Unsalted ButterSalted butter (reduce added salt by 1/2 teaspoon)
Granulated SugarBrown sugar (for a richer, slightly caramel flavor)
Sourdough DiscardButtermilk (1/4 cup)

Step-by-Step Magic

Prepping the dough: Start by creaming the butter and sugar together until fluffy (you’ll know it’s ready when it looks like frosting). Mix in the egg, sourdough discard, and vanilla extract—it might look a little messy, but trust the process.

Pat it down: Stir in the dry ingredients just until combined, then spread that luscious dough onto a greased baking dish with your favorite spatula or—let’s be real—your hands. No precision needed here!

Bake time: These beauties bake at 350°F for 25–30 minutes, just until the edges are golden and the middle is set. Keep an eye on them! You want that soft, chewy texture, not crunchy.

Key StepsTime
Preparing Dough10–15 min
Baking25–30 min
Cooling Before Frosting20–30 min

Baking Troubleshooting

Worried about dry cookie bars? The key is not overmixing the dough—stop as soon as the flour disappears. And for that perfect soft and moist texture, pull them out when the edges are light golden but the center is still slightly pale. They’ll set as they cool.

Pro Tip: Your sourdough discard should be somewhere between thick pancake batter and yogurt consistency. Too runny? Stir in a pinch of flour before adding it to the mix. Too thick? Thin it out with a few drops of water.

Jazz It Up

The base recipe is perfection, but why stop there? Add lemon zest to the batter for a citrusy kick or swirl chocolate chips into the dough for a gooey bite. Feeling fancy? Drizzle a glaze on top or sprinkle some colorful nonpareils for festive flair. 🎉

Seasonal Twists: During fall, try adding 1 teaspoon of ground cinnamon or a dash of nutmeg. In spring, swap out the vanilla frosting for strawberry or lemon versions using extracts!

Add-InFlavor Boost
Chocolate ChipsRich and indulgent
Lemon ZestBright and tangy
Festive SprinklesPlayful and fun

🧠 Expert Insight: The Science Behind Sourdough Sugar Cookie Bars

Incorporating sourdough starter into sugar cookie bars not only adds subtle tang but also enhances texture through natural fermentation. This process breaks down flour proteins, resulting in a tender crumb and improved digestibility, making sourdough sugar cookie bars a delicious twist on a classic treat.

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A Sweet Slice of Home

Whipping up these Sourdough Sugar Cookie Bars always reminds me of baking with my grandma, who swore that a little sourdough starter was the secret to magic in the kitchen. Every bite brings back that cozy, flour-dusted afternoon and the sweet smiles we shared while sneaking an extra piece.

FAQs ( Sourdough Sugar Cookie Bars )

How do I store Sourdough Sugar Cookie Bars?

Store your Sourdough Sugar Cookie Bars in an airtight container at room temperature for up to 3 days. To keep them fresh longer, refrigerate for up to a week or freeze for up to 3 months. This way, your bars stay soft, chewy, and delicious every time you enjoy them! 🍪

Can I make Sourdough Sugar Cookie Bars ahead of time?

Absolutely! Sourdough Sugar Cookie Bars actually taste better the next day as the flavors meld together. Bake them a day in advance and store them well-wrapped. They’re perfect for busy weekdays or holiday parties when you need a tasty treat on standby! 🎉

What makes Sourdough Sugar Cookie Bars different from regular sugar cookies?

The secret is the tangy sourdough starter! It adds a subtle depth of flavor and a delightful chewiness you won’t find in traditional sugar cookies. Plus, using sourdough is a fantastic way to reduce waste and use up your starter in a scrumptious way! 🤗

Can I substitute the sourdough starter in this recipe?

While the sourdough starter adds unique flavor and texture, you can substitute it with an equal amount of all-purpose flour and milk or water to keep the dough moist. However, your Sourdough Sugar Cookie Bars won’t have that signature tangy twist, so where’s the fun in that? 😄

Are Sourdough Sugar Cookie Bars easy for kids to help make?

Yes! The straightforward bar cookie format means less mess than rolling and cutting cookies, making it perfect for little helpers. Kids can help mix, spread the dough, and sprinkle sugar on top. Baking Sourdough Sugar Cookie Bars together is a fun way to involve the whole family! 👩‍🍳

Wrapping Up Your Sourdough Sugar Cookie Bars Adventure

These sourdough sugar cookie bars come together fast—just about an hour from start to finish—and gift you with soft, tangy, melt-in-your-mouth magic. You’ll love how simple pantry staples dance with that subtle sourdough twist. It’s cozy baking made effortless and utterly satisfying.

Feel free to swirl in chocolate chips, zest up the batter with lemon, or sprinkle festive sprinkles. Store leftovers wrapped tight or freeze for busy days ahead. A tip from a baker friend: letting bars cool completely helps them slice clean—trust me, it’s worth it!

Did these bars remind you of a family favorite or spark a new tradition? Snap a pic, share your tweaks, and pass this recipe on—it’s the kind of kitchen joy that lives on. Happy baking, friends!

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Sourdough Sugar Cookie Bars: Sweet & Tangy Treats!

Final Sourdough Sugar Cookie Bars plated on white napkin with natural lighting and clean styling

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Delight in these sweet and tangy sourdough sugar cookie bars that combine classic buttery goodness with a unique sourdough twist. Perfect for any occasion and easy to bake to perfection.

  • Author: Eleanor Royal
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Total Time: 1 hour 15 minutes
  • Yield: Serves 12 1x
  • Category: Dessert
  • Method: Baked
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

Scale
  • 340 grams unsalted butter about 1 1/2 cups
  • 450 grams granulated sugar about 2 1/4 cups
  • 1 large egg about 50 grams
  • 120 grams sourdough discard about 1/2 cup
  • 10 grams vanilla extract about 2 teaspoons or substitute with 2 teaspoons vanilla bean paste
  • 480 grams all-purpose flour about 3 2/3 cup
  • 8 grams baking powder about 1 1/2 teaspoons
  • 10 grams salt about 1 1/2 teaspoons
  • 113 grams unsalted butter about 1/2 cup butter
  • 190 grams powdered sugar about 1 1/2 cups
  • 25 grams heavy cream about 12 Tablespoons
  • 4 grams vanilla extract about 1 teaspoon
  • 3 grams salt about 1/2 teaspoon

Instructions

  1. Preheat oven to 350°F (175°C).
  2. Cream together unsalted butter and granulated sugar until light and fluffy.
  3. Add the egg and sourdough discard and mix until combined.
  4. Stir in vanilla extract.
  5. Combine flour baking powder and salt; gradually add to the wet ingredients mixing until just combined.
  6. Spread dough evenly into a prepared baking pan.
  7. Bake for 25-30 minutes until golden brown and set.
  8. Meanwhile prepare buttercream frosting by beating butter powdered sugar heavy cream vanilla extract and salt until smooth.
  9. Allow bars to cool completely then spread frosting evenly over the top.
  10. Slice into bars and serve.

Notes

  • For best flavor use active sourdough discard
  • You can substitute vanilla bean paste for a more intense vanilla flavor
  • Store bars in an airtight container for up to 5 days

Nutrition

  • Serving Size: 1 bar
  • Calories: 280 kcal
  • Sugar: 22g
  • Sodium: 210mg
  • Fat: 14g
  • Saturated Fat: 8g
  • Unsaturated Fat: 5g
  • Trans Fat: 0g
  • Carbohydrates: 34g
  • Fiber: 1g
  • Protein: 3g
  • Cholesterol: 45mg

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