There’s something about lemon desserts that make everything instantly feel like spring. This lemon poppy seed loaf cake is soft, buttery, and filled with bright citrus flavor.

It’s the kind of cake that feels equally perfect with a cup of coffee in the morning or served as an easy afternoon dessert. And the best part? It comes together with simple pantry ingredients and bakes into a beautiful bakery-style loaf.

Why You’ll Love This Lemon Poppy Seed Cake

This lemon poppy seed loaf is a favorite for a reason. It’s a soft and incredibly most bread that’s full of fresh lemon flavor. With the simple lemony glaze on top, it’s hard to tell if this loaf is for brunch or dessert. It’s also one of those recipes that tastes even better the next day once the lemon flavor deepens as it sits.

Step-By-Step Instructions

1. Preheat the oven to 350°F and grease a 9×5-inch loaf pan or line it with parchment paper so the loaf lifts out easily.
2. In a medium bowl, whisk the flour, baking powder, sea salt, and poppy seeds together. Set aside.
3. In a large bowl, beat the butter and sugar together with an electric mixer on medium speed until light and fluffy, about 2 minutes.
4. Mix in the eggs one at a time, then stir in the lemon zest, lemon juice, and vanilla extract.
5. Add the dry ingredients to the bowl in two additions, alternating with the buttermilk.
6. Mix just until combined and avoid overmixing.
7. Pour the batter into the prepared loaf pan and smooth the top.
8. Bake for 45-50 minutes, or until a toothpick inserted into the center comes out clean.
9. Let the loaf cool in the pan for 10 minutes, then transfer it to a wire rack to cool completely.
10. While loaf is cooling, whisk together powdered sugar and lemon juice until smooth.
11. Once the loaf has cooled, drizzle the glaze over the top and let it set up for a few minutes before slicing.

Recipe Tips & Notes

1. Use fresh lemons. The fresh-squeezed juice makes a huge difference in flavor.
2. If you can, use buttermilk. It adds a slight tang and helps create a softer, more tender crumb. Regular milk will work if that’s what you have on hand (I use it all the time because I seem to only have buttermilk during the holidays, haha).
3. Measure the flour carefully. Too much flour can make the loaf heavy and dense.
4. Let the loaf cool before glazing. This keeps the glaze from melting into the top of the cake.
5. For added lemon flavor (which I prefer, haha), add 1-2 teaspoons of lemon zest to the glaze.

Storage & Reheating Instructions

Store the loaf in an airtight container at room temperature for 3–4 days. If you’d like, you can also refrigerate it for up to 5 days, if it’s wrapped well.

The best way to freeze this loaf is to freeze individual slices wrapped in saran wrap or in a ziplock back for 2-3 months. Allow the bread to come up to room temperature before serving.