Preheat your oven to 350°F (175°C) and either grease a 9x5-inch loaf pan or line it with parchment paper for easy removal of your baked delight.

Whisk together the flour, baking powder, baking soda, and salt in a medium bowl; set aside. This will ensure your loaf has the perfect rise and texture.

Cream the softened butter and granulated sugar in a large bowl until light and fluffy, about 2-3 minutes. This step adds air to the mixture, creating a tender loaf.

Beat in the eggs one at a time, followed by the lemon juice, lemon zest, sour cream (or yogurt), and vanilla extract; mix until all ingredients are combined smoothly.

Gradually stir the dry ingredients into the wet mixture until just combined. Remember to stop mixing as soon as there are no flour streaks to prevent a tough loaf!

Fold in the chopped rhubarb and any optional ingredients you’d like to include, mixing gently to keep that lovely texture intact.

Pour the batter into your prepared loaf pan, smoothing the top with a spatula. Bake for 50–60 minutes, checking for doneness with a toothpick inserted into the center.

Cool the loaf in the pan for 10 minutes, then carefully transfer it to a wire rack to cool completely.

Optional: Drizzle with a simple lemon glaze for added sweetness.