If you’ve been baking sourdough, chances are you’ve got a jar of sourdough starter discard sitting in your fridge. Instead of tossing it out, why not turn it into a rich, moist, and flavorful sourdough carrot cake? This recipe is the perfect way to use up discard while baking a cake that’s soft, tender, and packed with warm spices.
Whether you’re looking for a dessert to share with family, a sweet treat for Easter, or simply a way to level up your carrot cake, this sourdough twist will become your new favorite.
For more cake recipes, check this out: Strawberry Sponge Cake, Blueberry Pound Cake, ube Cake, Strawberry Pound Cake, Grape Tart, Frozen Blueberry Tart, and this Almond Tart Crust Recipe.
Why Make Carrot Cake with Sourdough?
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Adds moisture – The starter keeps the cake extra soft.
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Depth of flavor – Slight tang from the sourdough balances the sweetness.
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Reduces food waste – A delicious way to use up sourdough discard.
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Foolproof baking – This recipe works even if your discard isn’t bubbly or active.
Ingredients You’ll Need for The Best Sourdough Carrot Cake Recipe
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Dry ingredients: all-purpose flour, baking soda, ground ginger, cinnamon powder, all spice. salt and nutmeg.
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Wet ingredients: eggs, vegetable oil, brown sugar, whole milk, vinegar and sourdough starter (discard).
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Add-ins: shredded carrots.
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Frosting: classic cream cheese frosting—because what’s carrot cake without it?
Step-by-Step Instructions
1. Prep Your Ingredients
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Shed fresh carrots and set it aside.
- Preheat oven to 350°F (175°C). Grease and line two 8-inch round cake pans or one 9×13-inch pan.
2. Mix Dry Ingredients
In a large bowl, whisk flour, baking soda, baking powder, salt, and spices.
3. Combine Wet Ingredients
In another bowl, beat eggs, sugar, oil, and sugar. Add the milk, vinegar and sourdough discard mix until smooth.
4. Fold in the Dry Ingredients
Mix using a a spatula and make sure that all the dry ingredients are incorporated by digging at the bottom of the bowl. And mixing the dry ingredients completely.
5. Bake
Pour into pans and bake 30–35 minutes (round) or 40–45 minutes (9×13) until a toothpick comes out clean.
6. Frost
Cool completely, then frost generously with cream cheese frosting.
Tips for the Best Sourdough Carrot Cake
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Use room temperature eggs for better mixing.
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Don’t overmix once you add flour—this keeps the cake tender.
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Chill the cake before frosting to prevent crumbs in the frosting.
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Make ahead! This cake actually tastes even better the next day as the flavors meld.
FAQ: Sourdough Carrot Cake
Can I use active sourdough starter instead of discard?
Yes! Both works. Active starter will give a bit more lift, but discard works perfectly.
Can I make this cake ahead of time?
Absolutely. Store unfrosted cake layers wrapped in plastic at room temp for 1–2 days or freeze for up to 2 months.
Can I make cupcakes instead?
Yes, bake for 18–20 minutes until tops spring back.
Final Thoughts
This sourdough carrot cake recipe is proof that your sourdough starter is more than just bread—it’s the secret to moist, bakery-quality cakes at home. Next time you have discard on hand, skip the muffins and pancakes—bake this cake instead.
Serve it at Easter, birthdays, or just a cozy weekend treat. Your family will never guess it started with sourdough!
Ingredients
Dry Ingredients
- 200 grams All Purpose Flour
- 15 grams Baking Soda
- 4 grams Salt
- 2 tsp Cinnamon
- 1/2 tsp Nutmeg
- 1 tsp Dry Ground Ginger
- 1/2 tsp All Spice
Wet Ingredients
- 250 grams Brown Sugar
- 75 grams Canola Oil
- 3 large Egg
- 200 grams Starter Discard
- 120 grams Whole Milk
- 2 tsp White Distilled Vinegar
- 1 1/2 cups Shredded Carrot
Optional Frosting Addition
- 1 cup Cream Cheese frosting ( See notes for the recipe)
Instructions
Dry Ingredients
- Place the oven rack in the middle and Preheat oven at 350 F.
- Line 8 inch round pan with parchment paper and spray with nonstick oil. Set it aside. You can also use small pans that you have available.
- Place the dry ingredients in a large bowl and mix using a wire whisk. Set it aside.
Wet Ingredients
- Place the brown sugar, egg and canola oil in an electric mixing bowl. Mix this for three minutes. Add the sourdough discard and the milk. Mix until incorporated.
- Add the dry ingredients. Mix the ingredients together using a spatula. Add the shredded carrots. Make sure to mix and dig into the bottom of the bowl to incorporate the dry ingredients with the wet.
- Transfer to the prepared pan. Level the batter and bake for eighteen to twenty minutes in the preheated 350 F oven , or until the toothpick comes out clean.
Welcome!
Hi, my name is Shobee. Welcome to The Skinny Pot, where we cook Easy Recipes from the available ingredients from our pantry and fridge! We’re your go-to source for simple and delicious recipes that make the most of what you already have at home. Talk about the pantry challenge. Read more...
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