Sourdough Discard Carrot Cake

Name: Sourdough Discard Carrot Cake
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: American
Ingredients: 1 cup sourdough discard; 1 cup sugar; 1/2 cup vegetable oil; 2 large eggs; 1 teaspoon vanilla extract; 1 1/2 cups all-purpose flour; 1 teaspoon baking powder; 1 teaspoon baking soda; 1/2 teaspoon salt; 1 teaspoon ground cinnamon; 1/2 teaspoon ground nutmeg (optional); 2 cups grated carrots; 1/2 cup crushed pineapple (optional); 1/2 cup chopped walnuts or pecans (optional)

Posted on April 21, 2026

Moist sourdough discard carrot cake topped with creamy cream cheese frosting and chopped nuts

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This sourdough discard carrot cake comes together in about 30 minutes and is one-bowl for a quick dessert that your family will absolutely love! It’s one of those weeknight treats that feels like a hug in cake form!

Ingredients for Your Sourdough Discard Carrot Cake

1 cup sourdough discard
1 cup sugar
1/2 cup vegetable oil
2 large eggs
1 teaspoon vanilla extract
1 1/2 cups all-purpose flour
1 teaspoon baking powder
1 teaspoon baking soda
1/2 teaspoon salt
1 teaspoon ground cinnamon
1/2 teaspoon ground nutmeg (optional)
2 cups grated carrots
1/2 cup crushed pineapple (optional)
1/2 cup chopped walnuts or pecans (optional)

Let’s Get Cooking!

Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking pan. This is important, don’t skip this step!
In a large bowl, whisk together the sourdough discard, sugar, vegetable oil, eggs, and vanilla extract until smooth. When you mix this, it should feel creamy and well-combined!
In another bowl, mix the flour, baking powder, baking soda, salt, and spices. This is where the magic happens!
Gradually add the dry ingredients to the wet mixture, stirring until just combined. You don’t want to over-mix. Just stir until it’s all mixed, flour lumps here are totally fine!
Now fold in those grated carrots along with any of your optional ingredients like pineapple or nuts until the batter is loaded with flavor and texture.
Pour the batter into the prepared baking pan and spread it evenly. Make sure it’s nice and smooth on top so it bakes evenly.
Bake for about 30-35 minutes or until a toothpick inserted in the center comes out clean. Seriously, the smell that will fill your kitchen is heavenly!
Allow your cake to cool before serving. This step helps it set and makes it even better!

If you loved this sourdough discard carrot cake, be sure to check out my Pumpkin Sourdough Bread, my Jalapeño Cheddar Sourdough Bread, or my Brown Butter Sourdough Discard Chocolate Chip Cookies! They’re all family favorites, and trust me, you won’t want to miss them!

Why This Recipe Works

Quick & Easy – Comes together in under 30 minutes

Part of the charm of this recipe is its simplicity! With minimal prep and clean-up, only one bowl, y’all this cake is a true time-saver during busy weeknights.

Budget-Friendly – Uses affordable, everyday ingredients

Most of these ingredients are kitchen staples you probably already have on hand. That means it’s not just good for your cravings; it’s good for your wallet, too!

Comfort Food – Loaded with tons of flavor

Every slice is fluffy, moist, and bursting with flavors! The tanginess from the sourdough and natural sweetness from the carrots create a symphony that’s just divine.

Customizable – Use whatever ingredients you have

You can switch out the nuts for seeds, add dried fruit, or even mix in chocolate chips if you’re feeling a little extra. This cake doesn’t judge!

Serving and Storage Tips

How to Serve This Cake

Serve slices of this delightful cake on its own or top it with a luscious cream cheese frosting for that extra indulgence. If you want to be fancy, garnish it with some toasted nuts or a dusting of powdered sugar. It’s great for parties, and trust me, it’s a perfect treat for birthdays too!

Storage:

This cake keeps well at room temperature for about 3-4 days. Just cover it to prevent it from drying out. If you need it to last longer, refrigerate it though, who are we kidding? It’ll be gone before you know it!

Reheating Instructions:

If you want to enjoy a slice warm (which, let’s be honest, is the best way!), pop it in the microwave for about 10-15 seconds. It’s like having cake fresh out of the oven!

Freezer Friendly:

Yes! You can freeze this cake, slice by slice. Wrap it tightly in plastic wrap and then in a freezer bag. It’ll keep well for about 2-3 months. Thaw in the fridge overnight and enjoy!

That’s it! Now you’re all set to whip up this amazing sourdough discard carrot cake. I can’t wait for you to try it! You’ll be so glad you did. Because really, who can resist a delicious piece of homemade carrot cake?

Feel free to adjust and make this recipe your own, because that’s what cooking is all about! Enjoy, friends! For more Recipes Follow Us in our Pinterest.