Preheat oven to 350°F. Grease a 9×5 loaf pan and line with parchment paper.
In a large bowl, whisk eggs, oil, lemon zest, lemon juice, and sugar until smooth.
Whisk in baking powder, baking soda, and salt.
Fold in flour just until no dry streaks remain.
Gently fold in zucchini and poppy seeds.
Pour into prepared pan, smooth the top, and bake for 60–65 minutes, until golden and a toothpick comes out clean.
Cool in pan for 10 minutes, then transfer to a wire rack to cool completely.
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