If you’re sitting on extra sourdough starter, don’t even think about tossing it—this glazed lemon loaf is where it shines. It’s got that subtle tang from the starter, layered with a punchy citrus vibe that hits just right. Not too heavy, not overly sweet… just that perfect balance you want whether it’s morning coffee time or a late-night sweet fix.

This recipe plays it your way. You can mix and bake right away for a quick win, or let the batter chill overnight in the fridge to deepen the flavor. Either route? You’re getting a soft, ultra-moist crumb with that fresh lemon kick.

What You’ll Need

• Sourdough starter discard
• Butter
• Sugar
• Eggs
• Fresh lemons (juice + zest)
• Applesauce
• Vanilla extract
• Flour
• Salt
• Baking soda
• Baking powder
• Powdered sugar

Let’s Make It

Step 1: Get Set Up

If you’re baking right away, preheat your oven to 350°F (176°C). Grab a 9×5 loaf pan and grease it lightly—no one wants a stuck loaf situation.

Step 2: Build the Batter

Mix your wet ingredients in one bowl and your dry mix in another.

If you’re going the overnight route, hold off on the baking soda and baking powder for now—add those right before baking so your loaf actually rises like it should.

Combine wet into dry and mix just until it comes together. Don’t overwork it.
You might notice a little fizz when lemon juice hits the leavening—that’s totally normal.

Step 3: Bake It

Pour the batter into your prepared pan and smooth out the top.

Bake for 50–60 minutes, or until a toothpick comes out clean. You’re looking for that light golden top and a set center.

Step 4: Let It Chill (Important)

Don’t rush this part. Let the loaf cool completely before slicing. It’s super moist, so cutting it early = crumbly mess.

Step 5: Glaze Game Strong

Once cooled, whisk together lemon juice and powdered sugar until smooth.

• Too runny? Add more sugar.
• Too thick? Splash in a little more lemon juice.

Drizzle it over the loaf and let it drip naturally down the sides. That glossy finish + citrus hit? Chef’s kiss.

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Pro Tips (Don’t Skip These)

• Slice only when fully cooled—this loaf is soft and delicate while warm.
• Want a thinner cake for frosting? Use an 8×8 pan and bake for 25–30 minutes.
• If fermenting overnight, always add baking soda + baking powder right before baking.
• Check your leavening agents—if they’ve been open over 6 months, they’re probably weak and won’t give you that rise.

Storing Leftovers

Got extra slices? Lucky you.

• Keep them loosely covered at room temp or in the fridge for up to 4 days.
• For longer storage, wrap each slice tight (plastic wrap + foil) and freeze for up to 3 months.

When you’re ready, let it thaw naturally or warm it up for that fresh-out-the-oven feel.