Bright Whole-Lemon Walnut Loaf Cake Tips, FAQ & printable recipe

Tips for success

For the brightest lemon flavor, use a fresh, fragrant lemon and blend it thoroughly. The longer you blend, the finer the peel becomes, so do not rush this step.

If you want a more intense lemon kick, add a teaspoon of lemon zest to the glaze. The cake is also delicious with a handful of fresh blueberries folded in, but keep the walnuts for texture.

This cake is forgiving and versatile. You can replace the walnuts with poppy seeds for a lemon-poppy seed version, or add a teaspoon of vanilla extract to the batter.

If you prefer a less sweet glaze, use only 2 tablespoons of lemon juice and add more gradually. The cake freezes well, so you can bake it ahead and glaze it just before serving.

Variations

• Lemon-Poppy Seed: Replace the walnuts with 2 tablespoons of poppy seeds. The poppy seeds add a delicate crunch and a classic lemon-poppy seed flavor. The glaze can remain the same.
• Blueberry Lemon: Fold 1 cup of fresh or frozen blueberries into the batter along with the walnuts. The berries burst during baking, adding pockets of juicy sweetness. If using frozen, do not thaw them first.
• Gluten-Free: Substitute the all-purpose flour with a 1:1 gluten-free baking flour blend. The cake will be slightly more tender, but the lemon flavor will shine. Ensure the blend includes xanthan gum for structure.
• Olive Oil: Use extra-virgin olive oil instead of vegetable oil for a fruity, savory note that complements the lemon. The cake will have a slightly denser crumb but a more complex flavor.

Storage and make-ahead

Fridge

Store in an airtight container in the refrigerator for up to 5 days; bring to room temperature before serving.

Freezer

Freeze the unglazed loaf wrapped tightly in plastic and foil for up to 2 months; thaw overnight in the fridge.

Reheat

Warm slices in a 300°F oven for 5-7 minutes to refresh the texture.

Store the cake in an airtight container at room temperature for up to 3 days. The glaze will stay glossy and the crumb will remain moist.

If the weather is very warm, you can refrigerate the cake, but let it come to room temperature before serving for the best texture.

The cake can be baked a day ahead and kept unglazed at room temperature. Glaze it just before serving for the freshest appearance.

You can also freeze the unglazed loaf for up to 2 months; thaw overnight in the refrigerator, then bring to room temperature and glaze.

Serving ideas

Serve this cake as a dessert with a dollop of whipped cream or a scoop of vanilla ice cream. The tangy glaze pairs beautifully with the moist crumb, and the walnuts add a satisfying crunch.

For a breakfast treat, serve thick slices with a drizzle of honey or a spoonful of Greek yogurt. The cake is not overly sweet, so it works well in the morning. If you are serving it to guests, dust with a little extra confectioners' sugar for a pretty finish.

Frequently asked questions

Recipe card

Bright Whole-Lemon Walnut Loaf Cake

Prep 10 minCook 45 minTotal 55 minServes 10

Ingredients

• 1 whole lemon, washed and cut into wedges
• 3 large eggs
• 1 cup vegetable oil
• 1 cup whole milk
• 1 cup granulated sugar
• 2 cups all-purpose flour
• 2 tsp baking powder
• 1/2 tsp salt
• 1 cup chopped walnuts
• 1 cup confectioners' sugar
• 2-3 tbsp fresh lemon juice

Instructions

1. Place the washed lemon wedges, eggs, oil, milk, and sugar in a blender. Blend on high for 2 minutes until the mixture is completely silky and the lemon is fully pureed.
2. In a large mixing bowl, whisk together the flour, baking powder, and salt until evenly combined.
3. Pour the blended lemon mixture into the dry ingredients. Stir with a spatula until just combined, then fold in the chopped walnuts.
4. Pour the batter into a greased 9x5-inch loaf pan. Bake at 350°F (175°C) for 45 minutes, until the top is domed and golden brown and a toothpick inserted in the center comes out clean.
5. While the cake is still hot, whisk the confectioners' sugar with enough lemon juice to form a pourable glaze. Pour it over the top of the loaf, letting it drip down the sides.
6. Let the cake cool in the pan for 10 minutes, then transfer to a wire rack. Slice and serve warm or at room temperature.

Contains: gluten, eggs, milk, tree nuts

Estimated nutrition per serving

Calories

410

Protein

6 g

Carbohydrates

48 g

Fat

23 g

Automatic estimate from the ingredient list, not laboratory-verified.