Lemon Sourdough Discard Cake

April 15, 2026

By Amanda

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Lemon Sourdough Discard Cake: A Slice of Sunshine for Your Day

There’s something magical about a slice of cake fresh from the oven — the way it beckons you with its golden crust, the sweet, tangy aroma wafting through the kitchen, and that first bite, where the cake crumbles softly yet dances vibrantly on your taste buds. This Lemon Sourdough Discard Cake is not just a recipe; it’s a warm hug on a plate, a delightful way to make use of your sourdough discard, and a tribute to the bright, sunny spirit of lemon. Growing up, my grandmother had a wonderful lemon tree in her backyard, laden with fruit that felt like pure sunshine. Every time we baked together, her laughter would fill the kitchen, and the air would be infused with zest and joy. If you’re looking for a cozy treat that not only satisfies your sweet tooth but also leaves your kitchen smelling heavenly, this easy weeknight dessert will become a favorite!

So, gather your ingredients and let’s bake a masterpiece you’ll definitely want to pin for later!

Why You’ll Love This Recipe

  • Made with sourdough discard, making it a wonderful way to reduce food waste in a delicious manner.
  • Moist, tender cake that’s bursting with vibrant lemon flavor for a refreshing dessert experience.
  • Quick and easy to prepare—perfect for busy weeknights or a last-minute gathering.
  • Can be served warm, at room temperature, or chilled, making it versatile for any occasion.
  • The dreamy lemon glaze adds just the right amount of sweetness, leaving you wanting more.

Ingredients You’ll Need for Lemon Sourdough Discard Cake

  • 1 cup sourdough discard
  • 1 cup sugar
  • 1/2 cup butter, softened
  • 2 eggs
  • 1/4 cup milk
  • 1 lemon (zested and juiced)
  • 1 1/2 cups all-purpose flour
  • 1 tsp baking powder
  • 1/2 tsp baking soda
  • 1/4 tsp salt
  • 1 cup powdered sugar (for glaze)
  • 2-3 tbsp lemon juice (for glaze)

Let’s Make It Together

  1. Preheat the oven to 350°F (175°C) and grease a 9×5 inch loaf pan, ensuring it’s set for a glorious rise.
  2. In a large bowl, cream together the softened butter and sugar until light and fluffy, a process that should feel prayer-like as you whisk some sweetness into your day.
  3. Beat in the eggs one at a time. Then, lovingly mix in the sourdough discard, milk, lemon zest, and lemon juice; feel the sunshine in your bowl!
  4. In another bowl, whisk together the flour, baking powder, baking soda, and salt, allowing the dry ingredients to mingle.
  5. Gradually mix the dry ingredients into the wet mixture until just combined, taking care not to over-mix to keep that tender texture.
  6. Pour the batter into the prepared loaf pan and smooth the top with the back of your spatula—this is where the magic starts.
  7. Bake for 50-60 minutes or until a toothpick comes out clean; the anticipation will fill your kitchen with warmth!
  8. Let the cake cool slightly before whisking together the powdered sugar and lemon juice to create a glaze that glistens with promise.
  9. Drizzle the luscious glaze over the cooled cake before serving, adding that final touch of sweetness.

Delicious Variations to Try

  • Zesty Blueberry Twist: Fold fresh or frozen blueberries into the batter for a pop of color and flavor, creating a fruity paradise in each slice.
  • Coconut Dreams: Add shredded coconut to the batter for a subtle taste of the tropics, making this cake feel like a mini-vacation on your plate.
  • Nuts About It: Toss in some chopped walnuts or pecans for a nutty crunch that contrasts beautifully with the tender cake.
  • Herb Infusion: For a unique twist, consider adding a teaspoon of finely chopped fresh rosemary or thyme for an aromatic experience that will elevate your cake to gourmet status.

Chef Emma’s Helpful Tips

  • Make-Ahead: This cake can be baked a day in advance. Just keep it wrapped tightly in plastic wrap at room temperature to maintain moisture and freshness.
  • Slicing Secret: To achieve perfect slices, use a serrated knife, which will glide through the soft cake without tearing it.
  • Storage Suggestions: Store leftover cake in an airtight container at room temperature for up to 3 days, or in the fridge for 5 days—if it lasts that long!
  • Ingredient Swaps: If you’re out of sourdough discard, unsweetened yogurt or applesauce can be used as a substitute, though it may change the flavor profile slightly.

What’s Inside – Nutrition Breakdown

  • Serving Size: 1 slice (about 1/12th of the cake)
  • Calories: 180
  • Carbohydrates: 23g
  • Sugar: 12g
  • Fat: 8g
  • Protein: 2g
  • Sodium: 120mg

Frequently Asked Questions

  • Can I make this ahead? Yes! This cake stays moist and flavorful for days, making it perfect for meal prep.
  • Can I use different ingredients? Absolutely! Feel free to experiment with other citrus fruits or dairy-free alternatives if needed.
  • How do I store leftovers? Store them in an airtight container at room temperature for up to 3 days, or in the fridge for up to a week.
  • How long does it last? The cake is best enjoyed within 3-5 days, but it does freeze well for up to a month.

A Cozy Closing Note

This Lemon Sourdough Discard Cake is more than just a dessert — it’s a heartfelt tradition that brings together the cozy comfort of home baking and the deliciously bright flavors of lemon. I hope it becomes a cherished recipe in your kitchen, just as it has in mine. Don’t forget to save this Lemon Sourdough Discard Cake to your cozy treats board—so it’s ready whenever you need a little slice of sunshine! Happy baking!

Lemon Sourdough Discard Cake

This Lemon Sourdough Discard Cake is a moist, tender treat bursting with vibrant lemon flavor, perfect for reducing food waste and satisfying your sweet cravings.
Prep Time 15 minutes
Cook Time 1 hour
Total Time 1 hour 15 minutes
Course Dessert, Snack
Cuisine American
Servings 12 slices
Calories 180 kcal

Ingredients
  

For the Cake

  • 1 cup sourdough discard
  • 1 cup sugar
  • 1/2 cup butter, softened
  • 2 pieces eggs
  • 1/4 cup milk
  • 1 piece lemon (zested and juiced)
  • 1 1/2 cups all-purpose flour
  • 1 tsp baking powder
  • 1/2 tsp baking soda
  • 1/4 tsp salt

For the Glaze

  • 1 cup powdered sugar
  • 2-3 tbsp lemon juice

Instructions
 

Preparation

  • Preheat the oven to 350°F (175°C) and grease a 9x5 inch loaf pan.
  • In a large bowl, cream together the softened butter and sugar until light and fluffy.
  • Beat in the eggs one at a time, then mix in the sourdough discard, milk, lemon zest, and lemon juice.
  • In another bowl, whisk together the flour, baking powder, baking soda, and salt.
  • Gradually mix the dry ingredients into the wet mixture until just combined.
  • Pour the batter into the prepared loaf pan and smooth the top.

Baking

  • Bake for 50-60 minutes or until a toothpick comes out clean.
  • Let the cake cool slightly before whisking together the powdered sugar and lemon juice to create the glaze.
  • Drizzle the glaze over the cooled cake before serving.

Notes

This cake can be baked in advance and stored wrapped in plastic wrap. For variations, consider adding blueberries, shredded coconut, or nuts. Use a serrated knife for perfect slices.

Nutrition

Serving: 1gCalories: 180kcalCarbohydrates: 23gProtein: 2gFat: 8gSaturated Fat: 5gSodium: 120mgSugar: 12g
Keyword Easy dessert, Lemon Cake, Moist Cake, Quick Recipe, Sourdough Discard
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