Preheat your oven to 350°F (175°C). This ensures that your lemon loaf bakes evenly.
Grease your loaf pan lightly with cooking spray or butter, and optionally line it with parchment paper for easy removal.
In a large mixing bowl, whisk together the eggs and granulated sugar until light and fluffy. Then, add the sour cream or Greek yogurt, canola oil, lemon zest, and lemon extract. Mix until all ingredients are well combined.
In a separate bowl, whisk together the all-purpose flour, baking powder, and salt to distribute the leavening agent evenly.
Gradually add the dry ingredients to the wet mixture, stirring gently until just combined. Be careful not to overmix; a few lumps are perfectly fine.
Pour the batter into the prepared loaf pan and smooth the top. Bake in the preheated oven for 50-60 minutes, or until a toothpick inserted into the center comes out clean.
Once baked, remove the loaf from the oven and let it cool in the pan for about 10 minutes. Then, transfer it to a cooling rack to cool completely.
In a small bowl, whisk together the confectioners' sugar and lemon juice until you reach a smooth, pourable consistency. Adjust the lemon juice as needed.
Once the loaf is completely cool, drizzle the lemon glaze over the top. Allow it to set for a few minutes before slicing.