Lemon Thyme Zucchini Bread

Lemon thyme zucchini bread is a tender, moist quick bread with bright citrus flavor and a subtle herbal note. The zucchini keeps the crumb soft while the lemon and thyme prevent it from tasting one-note or heavy. This bread works because you grate the zucchini fine, squeeze out its water, and bake it long enough that the outside sets before the inside dries out.

Ingredients for Lemon Thyme Zucchini Bread

All-purpose flour gives the bread structure and keeps it tender when you do not overmix. Baking powder and baking soda work together to lift the crumb and help the bread rise. Salt balances sweetness and brings out the lemon and thyme. Zucchini adds moisture and a light vegetable note. Lemon zest and lemon juice brighten the whole loaf and keep it from tasting flat. Fresh thyme adds a subtle earthiness that complements the lemon without being spicy. Sugar sweetens the batter and helps the crust brown. Eggs bind the ingredients and add richness. Vegetable oil keeps the crumb moist and tender through baking and storage. Vanilla extract deepens the flavor without adding vanilla taste.

Why This Lemon Thyme Zucchini Bread Works

Zucchini is mostly water, so the shredded vegetable releases liquid as it sits and as the bread bakes. You squeeze it dry before mixing so the batter does not become too wet and heavy. The oil in the batter replaces that moisture, keeping the crumb soft and tender even after the bread cools and the zucchini continues to release water.

The lemon zest and fresh thyme leaves go into the batter raw so their bright oils do not cook away. The lemon juice adds acidity that reacts with the baking soda to lift the bread, while also bringing out the thyme and keeping the citrus flavor sharp. The combination of baking powder and baking soda gives two types of lift: one from the baking soda reacting with the lemon juice right away, and one from the baking powder releasing gas as the bread heats in the oven.

The bread bakes at a moderate temperature so the outside can set and brown before the inside dries. A loaf that rises too fast or bakes too hot will crack on top and may bake unevenly, leaving the center dense. This recipe gives you time to build a golden crust while the center stays tender and moist.

Mistakes To Avoid

Do not skip squeezing the zucchini dry. Wet zucchini makes the batter heavy and loose, and the bread turns out dense, sunken in the middle, or gummy. The inside will not bake through before the top burns.

Do not overmix the batter once you add the flour. Stirring too much develops gluten and makes the crumb tough and springy instead of tender. Mix only until the flour disappears, then stop.

Do not use dried thyme in place of fresh. Dried thyme is much stronger and will taste sharp and medicinal. If you must use it, use one-third as much and rub it between your fingers to crush it before stirring it in.

Do not turn the bread out of the pan before it cools. The bread is fragile when it first comes out of the oven and will break or tear. Let it sit in the pan for 15 minutes, then tip it out gently onto a cooling rack.

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Ingredients

• 2 cups (250 grams) all-purpose flour
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 2 cups shredded zucchini, squeezed dry
• Zest of 2 lemons
• 3 tablespoons fresh lemon juice
• 2 tablespoons fresh thyme leaves, finely chopped
• 1 1/4 cups (250 grams) granulated sugar
• 2 large eggs
• 1/2 cup vegetable oil
• 1 teaspoon vanilla extract

Step-by-step Instructions

1. Heat the oven to 350°F (175°C). Grease a 9×5 loaf pan with oil or butter.
2. Grate the zucchini on the large holes of a box grater. Working in batches, squeeze the zucchini hard in your hands or in a clean towel until no more water runs out. Measure out 2 cups of squeezed zucchini and set it aside.
3. In a small bowl, whisk together the flour, baking powder, baking soda, and salt.
4. In a large bowl, whisk together the lemon zest, lemon juice, thyme, sugar, eggs, oil, and vanilla until well combined. Fold in the squeezed zucchini.
5. Add the flour mixture to the wet ingredients and stir with a wooden spoon or rubber spatula just until the flour disappears. Do not overmix. A few lumps are fine.
6. Pour the batter into the prepared loaf pan and smooth the top.
7. Bake for 50 to 60 minutes, until a toothpick inserted into the center comes out with just a few moist crumbs and the top is golden brown. The internal temperature should reach 200°F (93°C) when checked with an instant-read thermometer in the center of the loaf.
8. Let the bread cool in the pan for 15 minutes. Run a thin knife around the edges to loosen it, then turn it out onto a cooling rack and let it cool completely before slicing.