Copycat Starbucks Lemon Loaf

If you have ever grabbed that little Starbucks lemon loaf and immediately wished you had another slice, this one is for you. 🍋 It is buttery, soft, bright with fresh lemon, and finished with a sweet lemon glaze. The best part is that you can make the whole loaf at home and slice it exactly as thick as you want.

This is an approachable baking project, even if loaf cakes are not your usual territory. I am walking through the batter, the bake, the cooling step, the glaze, and the little things that keep the loaf moist instead of dry or dense.

Recipe at a Glance

• Prep Time: 20 minutes
• Cook Time: Not separately specified
• Bake Time: 50 to 60 minutes
• Chill Time: Not required
• Rest Time: About 15 minutes for the glaze to set
• Total Time: 1 hour 50 minutes
• Servings: 10 slices
• Difficulty: Easy

Ingredients

For the Lemon Loaf

• 1 3/4 cups all-purpose flour
• 1 teaspoon baking powder
• 1/2 teaspoon salt
• 1/2 cup salted butter, softened
• 1 cup granulated sugar
• 3 large eggs, room temperature
• 2 tablespoons fresh lemon zest
• 2 tablespoons fresh lemon juice
• 1 teaspoon vanilla extract
• 1/2 cup sour cream

For the Lemon Glaze

• 1 cup powdered sugar
• 2 to 3 tablespoons fresh lemon juice
• 1 teaspoon lemon zest

How to Make Copycat Starbucks Lemon Loaf

1. Prepare the pan. Heat the oven to 350°F. Grease a 9×5-inch loaf pan, then line it with parchment paper. Leave enough parchment hanging over the long sides to act as handles when you lift the baked loaf out.
2. Prepare the dry ingredients. Add the flour, baking powder, and salt to a medium bowl. Whisk them together until the baking powder and salt are evenly distributed.
3. Cream the butter and sugar. Add the softened butter and granulated sugar to a large bowl. Beat for 2 to 3 minutes, until the mixture looks lighter and fluffy. This step adds air to the batter, so do not rush it.
4. Add the eggs. Add the eggs one at a time, mixing after each addition. Scrape the sides of the bowl if needed. Add the lemon zest, lemon juice, and vanilla and mix until combined.
5. Combine the batter. Add half of the flour mixture and mix just until the dry ingredients are mostly incorporated. Add the sour cream and mix briefly. Add the remaining flour mixture and stop mixing as soon as you no longer see dry flour. Overmixing can make a loaf dense.
6. Fill the pan. Scrape the batter into the prepared loaf pan. Spread the top evenly with a spatula so the loaf bakes at a consistent thickness.
7. Bake. Bake for 50 to 60 minutes. The center should be set, and a toothpick inserted into the middle should come out with a few moist crumbs rather than wet batter. If the top becomes deeply golden before the center is finished, loosely tent the loaf with foil for the remaining baking time.
8. Cool in the pan. Let the loaf cool in the pan for 10 minutes. Then use the parchment handles to lift it onto a cooling rack. Let it cool completely before glazing.
9. Make the glaze. Add the powdered sugar, 2 tablespoons of lemon juice, and lemon zest to a bowl. Whisk until smooth. Add another teaspoon of lemon juice at a time if the glaze is too thick. You want a thick glaze that drizzles slowly instead of running straight off the loaf.
10. Glaze the loaf. Place the completely cooled loaf on the rack. Spoon the glaze over the top and gently spread it toward the edges. Let it sit for about 15 minutes so the glaze can set before slicing.

Tips for a Moist Lemon Loaf

• Use fresh lemon zest because the zest carries concentrated lemon aroma and flavor.
• Bring the eggs to room temperature so they incorporate smoothly into the butter mixture.
• Do not overmix once the flour goes in.
• Do not glaze a warm loaf. The glaze will melt into the cake instead of sitting on top.
• If the top browns quickly, use a loose foil tent rather than lowering the oven temperature midway through baking.
• Let the loaf cool fully before slicing so the crumb has time to finish setting.

Troubleshooting

Why did my loaf sink in the middle?

The most common causes are underbaking, opening the oven door too early, or overmixing the batter. Make sure the center is fully set before removing the loaf from the oven.

Why is my loaf dense?

Overmixing after the flour is added can develop gluten and make the crumb heavier. Mix only until the dry ingredients disappear.

Why is my glaze too thin?

Add a little more powdered sugar and whisk again. If it is too thick, add lemon juice one teaspoon at a time.

Easy Substitutions

Plain full-fat Greek yogurt can replace the sour cream. You can also adjust the glaze with a little extra lemon juice if you prefer a sharper lemon flavor. Fresh lemon is strongly preferred for both the zest and juice because bottled lemon juice does not provide the same aroma.

Storage and Freezing

Store the glazed loaf tightly covered at room temperature for up to 3 days or refrigerate it for up to 5 days. For longer storage, freeze the loaf without the glaze. Wrap it tightly and freeze for up to 3 months. Thaw it overnight in the refrigerator, bring it to room temperature, then add the glaze before serving.

Frequently Asked Questions

Can I use a different pan?

Yes, but the baking time will change. Smaller loaf pans and muffin tins will usually finish sooner, so begin checking early.

Can I make the loaf ahead?

Yes. The baked loaf can be made a day ahead and glazed before serving. Keeping the glaze separate until the loaf is cool also makes storage easier.

Can I freeze individual slices?

Yes. Wrap individual slices well and freeze them in an airtight container or freezer-safe bag. Thaw in the refrigerator and bring to room temperature before serving.

Shop This Recipe

• USA Pan 1-Pound Loaf Pan, 2-Pack for the tall, even lemon loaf shape
• Microplane Premium Classic Series Zester, Black for fine lemon zest

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More Sweet Pea Favorites

Pair this loaf with our Copycat Starbucks White Chocolate Mocha for a coffee-shop-at-home treat.

Build a simple bakery-style dessert table

For a larger gathering, serve this lemon loaf alongside our Better Boxed Cake Recipe so guests can choose between a bright citrus slice and a soft vanilla-style cake. The Copycat Crumbl Chocolate Chip Cookies add a chocolate option without requiring another cake pan.

For more copycat favorites, browse our Copycat Recipes hub. If you need help deciding what to make next, visit What Should I Make?, or find useful kitchen tools at Shop My Kitchen.