If you’ve ever grabbed a slice of lemon loaf from Starbucks, you already know how good it is, soft, dense, perfectly sweet, and topped with that thick white icing. This homemade version takes everything you love about it and makes it even better.
It has that same rich, bakery-style texture, somewhere between a classic pound cake and a soft, tender loaf, but with a deeper flavor and an incredibly moist crumb. The combination of butter, oil, and buttermilk gives it that signature density without feeling heavy, and the lemon flavor is bright without being overpowering. Finished with a thick vanilla icing that sets on top, this is one of those recipes that feels simple but delivers every time.
Is This the Same as Starbucks?
This recipe is very similar to the lemon loaf from Starbucks, it’s soft, dense, and topped with that thick white icing. The main difference is the icing. Starbucks’ version has a slightly lemon-flavored icing, while this one uses a vanilla icing for a more balanced, bakery-style finish. I just have always preferred vanilla icing with lemon desserts but if you’d like lemon add 1/2 tsp of lemon juice or zest to the icing!
Recipe Tips
Room temperature ingredients: This is key for getting the texture right. Make sure your butter, eggs, and buttermilk are all at room temperature before starting. It helps everything mix together smoothly and gives you that soft, tender crumb instead of a dense or uneven loaf.
Don’t overmix the batter: Once you start adding the dry ingredients, mix just until everything is combined. Overmixing can make the loaf tough instead of soft and tender. A few small streaks of flour are totally fine, they’ll work themselves out.
Bake time: This is a thicker, bakery-style loaf, so it does take a bit longer to bake. Mine usually takes around 70–80 minutes, but every oven is different. Start checking around 60 minutes and look for a clean toothpick and a set center. If the top starts browning too quickly, loosely tent it with foil.
That crack down the middle: If you want that classic bakery-style look, run a thin line of cold butter straight down the center of the batter before baking. It helps create that clean split as the loaf rises in the oven.
Loaf pan: This snack cake is baked up in a standard loaf pan. You could also bake it in a 9×9 pan as well for a shorter more cake like slice!
Icing consistency: The icing should be thick and spreadable, not runny. Think more like frosting than glaze. If it’s too thin, add a little more powdered sugar. If it’s too thick, add a tiny splash of cream. This is what gives you that classic thick, white top. I prefer a vanilla icing but you can add lemon zest or juice if you’d like some lemon flavor!
Let it cool completely: This part matters more than you think. If the loaf is even slightly warm, the icing will melt and slide right off. Let it cool fully so the icing sets up nicely on top.
Storage
This loaf keeps really well, which makes it perfect for making ahead. You can store it covered at room temperature for a couple of days, and it will stay soft and moist. If you need it to last longer, refrigerating it will extend the life to about five days, just let it come back to room temperature before serving for the best texture.
It also freezes well. Wrap it tightly and freeze for up to two months, then thaw overnight or on the counter when you’re ready to enjoy it.
Copycat Starbucks Lemon Loaf
Ingredients
For the loaf cake:
- 10 tbsp salted butter room temperature
- 1 ¾ cup granulated sugar
- 2 tsp lemon zest zest of 1 lemon
- 1 tsp vanilla extract
- ½ cup vegetable oil
- 3 eggs room temperature
- 1 cup buttermilk room temperature
- 2 tbsp fresh lemon juice juice of 1 small lemon
- 3 cups all-purpose flour
- 1 3.4 oz box instant lemon pudding mix
- ½ tsp baking soda
- ½ tsp kosher salt
For the vanilla icing:
- 2 cups powdered sugar
- 2-4 tbsp heavy cream room temperature
- 1 tsp vanilla extract
Instructions
For the loaf cake:
- Preheat your oven to 325°F and line a standard 9×5 loaf pan with parchment paper, leaving some overhang so it’s easy to lift out later.
- In a large bowl, cream together the butter and sugar until light and fluffy, about 2–3 minutes. Mix in the lemon zest and vanilla extract, then add the oil and mix until smooth. Add the eggs one at a time, mixing well after each addition.
- In a separate bowl, whisk together the flour, lemon pudding mix, salt, and baking soda. Add the dry ingredients to the batter in batches, alternating with the buttermilk, beginning and ending with the dry ingredients. Mix just until combined, then stir in the lemon juice.
- Pour the batter into the prepared pan and smooth the top. If you want that classic crack down the middle, run a thin line of cold butter straight down the center of the batter. I put it in a piping bag and pipe it down the center but this isn't required!
- Bake for 60–80 minutes, or until a toothpick inserted into the center comes out clean. If the top starts to brown too quickly, loosely tent it with foil partway through baking. Let the loaf cool in the pan for 15–20 minutes, then lift it out and transfer to a wire rack to cool completely.
For the icing:
- To make the icing, whisk together the powdered sugar, heavy cream, vanilla extract, and salt until smooth. The icing should be thick and spreadable, not runny. Once the loaf is completely cooled, spoon the icing over the top and gently spread it, letting it settle naturally. Allow the icing to set before slicing.