Transforming your sourdough discard into something utterly delicious has never been easier or more satisfying than with these delightful coffee cake bars. Perfect for a sweet treat any time of day, they offer that comforting cinnamon sugar swirl we all adore, all wrapped up in a convenient bar form.

Sourdough Discard Coffee Cake Bars for a Sweet Treat 16

This recipe is a fantastic way to use up that active discard you’ve got sitting in your fridge, turning it into a quick and easy dessert or even a special breakfast. Get ready to create a delicious treat that everyone in your family will absolutely love.

What You’ll Love About This Quick And Easy Recipe
Everything You Need To Make This Recipe Without Stress
Time Needed From Start To Finish
How To Make It Step By Step With Visual Cues
Easy Variations And Serving Ideas That Fit Real Life
Common Slip-Ups And How To Avoid Them
How To Store It And Make It Ahead Without Ruining Texture

What You’ll Love About This Quick And Easy Recipe

This recipe is a true gem for anyone looking to make the most of their sourdough discard without committing to a full loaf of bread. It’s incredibly beginner-friendly, making it perfect for new bakers or those who are just starting their sourdough journey. You’ll love how quickly these bars come together, making them an ideal choice for busy weeknights when you crave something sweet but don’t have hours to spend in the kitchen. They are also fantastic for weekend brunches, potlucks, or simply as a comforting snack with your afternoon coffee. The combination of tender cake and a sweet, crumbly topping is universally appealing, ensuring these coffee cake bars will disappear fast!

Everything You Need To Make This Recipe Without Stress

Gathering your ingredients before you start baking is a great way to ensure a smooth and stress-free cooking experience. Most of these items are likely already in your pantry, making this a convenient recipe to whip up on a whim.

INGREDIENTS:

1 ½ cups all-purpose flour
1 teaspoon baking powder
½ teaspoon baking soda
½ teaspoon salt
½ cup (1 stick) unsalted butter, softened
¾ cup granulated sugar
1 large egg
½ cup sourdough discard (unfed, 100% hydration)
½ cup buttermilk (or milk with 1 tablespoon lemon juice/vinegar)
1 teaspoon vanilla extract

¼ cup packed light brown sugar
1 tablespoon ground cinnamon
2 tablespoons unsalted butter, melted

1 cup powdered sugar
2 tablespoons milk
¼ teaspoon vanilla extract

When it comes to substitutions, you have a few easy options. If you don’t have buttermilk, you can easily make your own by adding 1 tablespoon of lemon juice or white vinegar to regular milk and letting it sit for 5 minutes until it slightly curdles. For the butter, either salted or unsalted works, just adjust the added salt in the recipe accordingly if using salted butter. While the glaze is optional, it adds a lovely touch of sweetness and a professional finish to your coffee cake bars.

Time Needed From Start To Finish

One of the best features of these sourdough discard coffee cake bars is how quickly they go from mixing bowl to delicious treat. You won’t be spending all day in the kitchen!

Preparation Time: 15 minutes
Baking Time: 25-30 minutes
Cooling Time: 15 minutes (before glazing and serving)
Total Time: Approximately 55-60 minutes

This makes it a perfect recipe for a last-minute dessert or a quick bake sale contribution. The hands-on time is minimal, allowing you to focus on other tasks while your delicious bars bake to golden perfection.

How To Make It Step By Step With Visual Cues

Creating these delightful coffee cake bars is straightforward. Follow these simple steps for a perfect outcome every time.

Prepare Your Baking Pan and Oven: Start by preheating your oven to 350°F (175°C). Lightly grease and flour an 8×8 inch baking pan, or line it with parchment paper, leaving an overhang on two sides to easily lift the bars out later. This ensures your bars won’t stick and makes for easy cleanup.
Combine Dry Ingredients: In a medium bowl, whisk together the all-purpose flour, baking powder, baking soda, and salt. Make sure these are well combined so the leavening agents are evenly distributed throughout the batter. Set this bowl aside.
Cream Wet Ingredients: In a large bowl, using an electric mixer or a sturdy whisk, cream together the softened unsalted butter and granulated sugar until the mixture is light and fluffy. This usually takes about 2-3 minutes. Beat in the large egg until fully incorporated, then stir in the sourdough discard and vanilla extract until just combined.
Alternate Wet and Dry: Gradually add the dry ingredient mixture to the wet ingredients, alternating with the buttermilk. Begin and end with the dry ingredients. Mix on low speed or by hand until just combined. Be careful not to overmix; a few lumps are okay. Overmixing can lead to tough bars.
Assemble the Swirl: Pour about two-thirds of the batter into your prepared baking pan and spread it evenly. In a small bowl, combine the brown sugar and ground cinnamon for the swirl. Sprinkle half of this cinnamon sugar mixture evenly over the batter in the pan. Dollop the remaining one-third of the batter over the cinnamon sugar layer, then carefully spread it out. Sprinkle the remaining cinnamon sugar mixture over the top. Drizzle the 2 tablespoons of melted butter over the top of the cinnamon sugar.
Bake to Perfection: Place the baking pan in the preheated oven and bake for 25-30 minutes, or until a wooden skewer or toothpick inserted into the center of the cake comes out clean. The top should be golden brown and the edges slightly pulled away from the pan.
Cool and Glaze: Once baked, remove the pan from the oven and let the coffee cake bars cool in the pan on a wire rack for at least 15 minutes. While they cool, whisk together the powdered sugar, milk, and vanilla extract in a small bowl until smooth to make the optional glaze. Once the bars have cooled slightly, drizzle the glaze evenly over the top.
Slice and Serve: Allow the glaze to set for a few minutes before lifting the bars out of the pan using the parchment paper overhang. Slice into squares and serve warm or at room temperature.

Easy Variations And Serving Ideas That Fit Real Life

These sourdough discard coffee cake bars are wonderfully versatile and can be adapted to suit different tastes and occasions. For a more decadent treat, you could add about ½ cup of chocolate chips or chopped nuts (like pecans or walnuts) to the batter before baking. If you’re serving these for a special brunch, a dollop of whipped cream or a scoop of vanilla ice cream alongside a warm bar makes for an extra-special presentation.

For kid-friendly options, consider adding colorful sprinkles to the glaze before it sets, or even a different flavored extract like almond or lemon to the glaze for a subtle twist. These bars are also fantastic for school lunchboxes or as an after-school snack. They travel well, making them ideal for picnics, potlucks, or as a thoughtful gift for a neighbor. You can also sprinkle a little extra cinnamon sugar on top before baking for a more pronounced crunchy topping.

Common Slip-Ups And How To Avoid Them

Even simple recipes can have a few common pitfalls. Knowing what to watch out for can help you achieve perfect coffee cake bars every time.

Overmixing the Batter: This is a classic mistake that can lead to tough, dense baked goods. Once you add the dry ingredients to the wet, mix only until just combined. A few small lumps are perfectly fine and often indicate a tender crumb.
Not Greasing the Pan Properly: If your pan isn’t adequately greased and floured, or lined with parchment paper, your bars might stick, making them difficult to remove cleanly. Take the extra minute to prepare your pan well.
Baking at the Wrong Temperature: An oven that’s too hot can lead to burnt edges and an undercooked center, while an oven that’s too cool can result in a dry, crumbly texture. Ensure your oven is preheated to the correct temperature before placing the pan inside. An oven thermometer can be a great tool for accuracy.
Cutting Too Soon: While tempting, cutting into hot coffee cake bars can cause them to crumble or fall apart. Allow them to cool in the pan for at least 15 minutes before slicing; this gives the structure time to set. If you’re glazing, wait until they’re mostly cool to prevent the glaze from melting completely.
Forgetting the Sourdough Discard is Unfed: This recipe specifically calls for *unfed* sourdough discard, meaning it’s been sitting in your fridge and hasn’t been fed recently. Using active, fed starter will change the texture and rise of the bars, as it has different leavening properties.

How To Store It And Make It Ahead Without Ruining Texture

These sourdough discard coffee cake bars are best enjoyed fresh, but they also store well, making them a great option for meal prep or enjoying over a few days.

To store them, place the cooled and glazed bars in an airtight container at room temperature for up to 3-4 days. If your kitchen is particularly warm, or if they have a dairy-heavy glaze, you might consider refrigerating them, though this can sometimes slightly alter the texture. If refrigerated,

FAQs

Can I make these ahead? Yes—prep ahead, refrigerate, then serve when ready.
How long do leftovers last? Store covered in the fridge for 3–4 days for best texture.
Can I adjust sweetness? Yes—add more or less sweetener to taste.
Can I change the fruit? Yes—swap strawberries for blueberries, raspberries, or sliced banana.