Sourdough Lemon Loaf Cake

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This easy sourdough lemon loaf cake is the perfect one bowl recipe to make when you need something sweet. It's soft, buttery, bursting with lemon flavor and can be made with starter or discard. The simple sweet and tangy lemon glaze adds an extra pop to the flavor, and makes the loaf look extra special.

Sourdough Lemon loaf sliced on serving plate.

If you love lemon recipes, you're going to enjoy these sourdough lemon crinkle cookies and these sourdough lemon muffins. You might also like this blueberry lemon sourdough bread and this sourdough discard cake with dates and lemon drizzle.

Why You'll Love This Recipe!

One Bowl Recipe - mix this batter in one bowl with a whisk. It can be prepped in 10 minutes and placed in the oven to do all the work.

Bright Lemon Flavor - lemon zest and extract combine to bring lots of lemon flavor to the loaf. Lemon juice is mixed into the glaze, which adds an additional sweet lemon flavor, and pairs perfectly with the slight tang of the sourdough.

Use Starter or Discard - you can either use active sourdough starter or discard in this recipe. It's a great way to use whatever you have more of on hand.

Sourdough Lemon loaf on serving plate next to a knife and lemons.

Ingredients

  • Butter - I've used salted butter. You want your butter melted, but let it cool a bit before adding so it doesn't start to cook the eggs.
  • Sugar - white granulated sugar keeps the flavor simple and allows the lemon to shine in this recipe.
  • Eggs - use large eggs. My eggs are around 60g each.
  • Lemon Extract - I love the extra lemon flavor from the extract. Just a small amount is used to really enhance the lemon here without needing multiple lemons.
  • Milk - I've used whole milk in this recipe. You can use a non-dairy milk if you prefer.
  • Lemon - you'll use the zest of the lemon in the loaf mix and the juice of the lemon to make the glaze.
  • Sourdough Starter - starter or sourdough discard will work great in this recipe.
  • All Purpose Flour
  • Baking Powder
  • Baking Soda
  • Salt
  • Powdered Sugar - powdered sugar mixes with lemon juice to make a simple and tasty glaze.
Sourdough Lemon loaf labeled ingredients.

How to Make Sourdough Lemon Loaf Cake

I created this recipe from my sourdough vanilla cupcakes recipe. Long story short, we had friends coming for a play date and I needed something quick and easy I could have baking in the oven while I tidied the house. Voila, this sourdough lemon loaf cake was born!

Preheat oven to 175C (350F).

Add the melted butter, sugar and eggs to a bowl and whisk until well combined. Then add the milk lemon extract, lemon zest and sourdough starter, mixing until well combined.

Wet ingredients for sourdough Lemon loaf being mixed together in bowl with a whisk.

On top of the wet ingredient mixture, add the all purpose flour, baking powder, baking soda and salt. Lightly whisk the mixture until it forms a batter. You don't want to over mix it here - you don't want a lot of air in this mixture.

Sourdough Lemon loaf batter mixed in bowl with whisk.

Pour the mixture into a buttered loaf pan and bake for 1 hour at 175C (350F).

Sourdough Lemon loaf batter in loaf pan.

Remove from the oven and allow to cool in the pan for around 30 minutes before placing on a wire rack to cool completely.

Make The Lemon Glaze

Mix together the powdered sugar and lemon juice until a smooth glaze forms. Drizzle over the cooled cake. Garnish with lemon zest if desired.

If you prefer a cream cheese frosting, you can add some extra powdered sugar to my vanilla cream cheese frosting featured in my sourdough cinnamon rolls recipe.

Kate's Recipe Tips

  • If you like things really lemony, add an extra 5g of lemon extract and some extra lemon zest.
  • To make sure that the sourdough lemon loaf does not get too airy, bang the loaf pan on the counter a few times before placing into the oven. This pops any air bubbles that have formed when filling the loaf pan.

How to Store + Freeze

While this is super easy to throw together, it also freezes really well! I love having individual slices (popped in a ziploc bag) in the freezer when I need a quick little treat with coffee! You can store it in the freezer for up to 3 months.

If you don't plan to freeze this loaf, store in a ziploc bag or an airtight container at room temperature for up to 3 days.

sourdough lemon loaf Pinterest Pin image

Sourdough Lemon Loaf Cake

This easy sourdough lemon loaf cake is as easy as it is as easy as it is delicious! It's a one bowl recipe that's perfect to throw together whenever you need a sweet lemon quick bread that's sure to impress.
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Prep Time 10 minutes
Cook Time 1 hour
Total Time 1 hour 10 minutes
Servings 8 slices
Calories 436 kcal

Equipment

  • Loaf Pan (I've used a 1 pound USA Bakeware Loaf pan measuring 8.5" x 4.5" x 2.75")

Ingredients  

Wet Ingredients

  • 150 g Butter (melted)
  • 200 g Sugar (white granulated sugar)
  • 3 Eggs (around 60g each)
  • 10 g Lemon Extract (approx. 2 tsp)
  • 100 g Milk (whole milk)
  • 1 Lemon (zest only)
  • 150 g Sourdough Starter (or sourdough discard)

Dry Ingredients

  • 200 g All Purpose Flour
  • 7 g Baking Powder
  • 4 Baking Soda
  • 4 g Salt

Lemon Glaze

  • 125 g Powdered Sugar
  • 25 g Lemon Juice

Instructions 

  • Preheat oven to 175C (350F).
  • Add the melted butter, sugar and eggs to a bowl and whisk until well combined. Then add the milk lemon extract, lemon zest and sourdough starter, mixing until well combined.
  • On top of the wet ingredient mixture, add the all purpose flour, baking powder, baking soda and salt. Lightly whisk the mixture until it forms a batter. You don't want to over mix it here - you don't want a lot of air in this mixture.
  • Pour the mixture into a buttered loaf pan and bake for 1 hour at 175C (350F).
  • Remove from the oven and allow to cool in the pan for around 30 minutes before placing on a wire rack to cool completely.

Lemon Glaze

  • Mix together the powdered sugar and lemon juice until a smooth glaze forms. Drizzle over the cooled cake. Garnish with lemon zest if desired.
    If you prefer a cream cheese frosting, you can add some extra powdered sugar to my vanilla cream cheese frosting featured in my sourdough cinnamon rolls recipe.

Notes

Butter - the butter needs to be melted for this recipe to work. Make sure that the butter isn't hot when you add it to the eggs though. Allow it to cool slightly before using.
Eggs - I've used 3 eggs in this recipe, my eggs are from my backyard chickens and their yolks are very yellow, almost orange. This does give my sourdough lemon loaf cake a richer color.

Nutrition

Serving: 100g Calories: 436kcal Carbohydrates: 66g Protein: 6g Fat: 18g Saturated Fat: 10g Polyunsaturated Fat: 1g Monounsaturated Fat: 5g Trans Fat: 1g Cholesterol: 103mg Sodium: 574mg Potassium: 96mg Fiber: 1g Sugar: 41g Vitamin A: 581IU Vitamin C: 8mg Calcium: 89mg Iron: 2mg
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