Preheat your oven to 350°F. Grease and flour a 9x5-inch loaf pan or line it with parchment paper.
In a medium bowl, whisk together the 1 ½ cups all-purpose flour, 1 tsp baking powder, ½ tsp baking soda, and ¼ tsp salt. Set aside.
1 ½ cups all-purpose flour, 1 tsp baking powder, ½ tsp baking soda, ¼ tsp salt
In a large bowl, using an electric mixer, cream together the softened ½ cup unsalted butter and 1 cup granulated sugar until light and fluffy, about 3-4 minutes.
½ cup unsalted butter, 1 cup granulated sugar
Beat in the 2 large eggs one at a time, ensuring each egg is fully incorporated before adding the next. Add the 1 tsp vanilla extract and 2 tbsp lemon zest, mixing until combined.
2 large eggs, 1 tsp vanilla extract
Add the ½ cup sour cream and ¼ cup lemon juice to the butter mixture, mixing until smooth. Gradually add the dry ingredients, alternating with the ½ cup milk, beginning and ending with the dry ingredients. Mix until just combined, being careful not to overmix.
½ cup sour cream, ¼ cup lemon juice, ½ cup milk, 2 tbsp lemon zest
Pour the batter into the prepared loaf pan and smooth the top with a spatula. Bake for 50-60 minutes, or until a toothpick inserted into the center comes out clean. If the top is browning too quickly, cover loosely with foil for the last 15 minutes of baking.
Allow the cake to cool in the pan for about 10 minutes before transferring it to a wire rack to cool completely.
In a small bowl, whisk together the 1 cup powdered sugar and 2-3 tbsp lemon juice until smooth. Adjust the consistency by adding more lemon juice if needed.
1 cup powdered sugar, 2-3 tbsp lemon juice
Once the cake is completely cool, drizzle the lemon glaze over the top, letting it drip down the sides.
Slice and serve your moist lemon loaf cake with a cup of tea or coffee. Enjoy the bright, zesty flavors!