Whole Lemon Loaf Cake with Vanilla Glaze Step-by-step instructions

Before you start

Preheat the oven to 350°F (175°C). Line a 9x5-inch loaf pan with parchment paper, leaving overhang on two long sides for easy lifting. Have all ingredients at room temperature. Wash the lemon thoroughly.

Chop the lemon into chunks, removing any seeds. Measure the flour, sugar, milk, and oil. Set up the blender and a large mixing bowl. This recipe comes together quickly once the blender is running, so having everything ready ensures a smooth process.

Instructions

Blend and Mix

1. 1Blend the Wet Mixture
   Chop the whole organic lemon into chunks, removing any seeds. Place the lemon chunks in a high-speed blender. Add the eggs, sugar, milk, and oil. Blend on high until completely smooth and frothy, about 1 minute. The mixture should be pale yellow and aromatic.
   Look for The puree is smooth with no visible lemon pieces; it smells intensely citrusy.
   Tip Scrape down the sides of the blender once or twice to ensure the lemon is fully incorporated.
2. 2Mix the Dry Ingredients
   Pour the lemon puree into a large mixing bowl. Sift the all-purpose flour, baking powder, and vanilla sugar over the wet mixture. Whisk gently until just combined and no streaks of flour remain. The batter will be slightly thick but pourable.
   Look for The batter is smooth and velvet-like, with no lumps.
   Tip Do not overmix; stop as soon as the flour disappears to keep the crumb tender.

The wet mixture is a smooth, frothy pale yellow puree with a strong lemon aroma. After adding the dry ingredients, the batter is thick but pourable, with no lumps. It should feel velvet-smooth when whisked. The scent is sweet and citrusy, promising a tender crumb.

Bake and Cool

3. 3Bake the Loaf
   Preheat the oven to 350°F (175°C). Line a 9x5-inch loaf pan with parchment paper, leaving overhang on two sides. Pour the batter into the prepared pan. Bake for 50 to 55 minutes, until a toothpick inserted in the center comes out clean or with a few moist crumbs. The top should be golden brown and spring back when lightly pressed.
   Look for The loaf is risen, golden, and a toothpick test comes out clean.
   Safe temperature 160°F (71°C) internal temperature (egg dishes)
   Tip If the top browns too quickly, tent loosely with foil after 30 minutes.
4. 4Cool the Cake
   Remove the loaf from the oven and let it cool in the pan on a wire rack for 10 minutes. Then lift it out using the parchment overhang and transfer to the wire rack to cool completely, about 1 hour. The cake must be fully cool before glazing.
   Look for The loaf is cool to the touch and holds its shape when lifted.
   Tip Cooling completely prevents the glaze from melting into the cake.

The loaf rises evenly, turning a deep golden brown. A toothpick inserted in the center comes out clean. The kitchen fills with a warm, baked lemon fragrance.

The cake feels springy to the touch. After cooling, the loaf is firm and holds together when lifted from the pan.

Glaze and Slice

5. 5Make the Glaze
   In a small bowl, whisk together the powdered sugar and fresh lemon juice until the mixture is thick and opaque white. It should fall from the whisk in a slow ribbon. If too thick, add a few drops of lemon juice; if too thin, add more powdered sugar.
   Look for The glaze is smooth, thick, and bright white.
   Tip For a thicker glaze, use less juice; for a thinner one, add a little more.
6. 6Glaze and Serve
   Drizzle the glaze in generous zigzags over the top of the cooled loaf. Let it set for about 10 minutes before slicing. Use a serrated knife to cut thick slices, pressing down gently to reveal the ultra-moist, sunshine-yellow crumb.
   Look for The glaze is set and the slices show a tender, fragrant crumb.
   Tip For clean slices, wipe the knife between cuts.

The glaze is thick, opaque, and bright white. When drizzled, it creates elegant zigzags that set after a few minutes. Slicing reveals a moist, sunshine-yellow interior with a fine, tender crumb. The aroma is intensely citrusy and inviting.

Common mistakes

Overmixing the batter can develop gluten and result in a dense, tough loaf. Mix just until the flour disappears. Another common mistake is not blending the lemon enough, leaving chunks that create bitter pockets.

Blend until the mixture is completely smooth. Also, ensure the oven is fully preheated, as a cooler oven will cause the cake to sink in the middle.

How to tell it’s done

The loaf is done when a toothpick inserted into the center comes out clean or with a few moist crumbs. The top should be golden brown and spring back when gently pressed.

The internal temperature should reach 160°F (71°C) for food safety, as the batter contains eggs. If the top browns too quickly, tent with foil. Cool completely before glazing to prevent the glaze from melting.

• Egg dishes: 160°F (71°C) in the thickest part