Preheat oven to 350 F. Lightly grease a 9x5-inch loaf pan with non-stick cooking spray.
In a large bowl, cream the butter and sugar together. Mix in the eggs, lemon juice, lemon zest, sour cream, and vanilla.
In a separate bowl, whisk together the flour, baking powder, and salt. Gently stir these dry ingredients into the other bowl and form into batter. Pour into the greased loaf pan.
Bake in the preheated oven for 45 to 50 minutes, or until toothpick comes out clean in the center. Set to cool on cooling rack.
GLAZE: While the lemon bread is cooling, mix up the glaze in a small bowl. Add the powdered sugar and fork and stir to combine. Add a touch more powdered sugar or drops of lemon juice to reach desired glaze consistency. Drizzle over the warm bread.
Serve Glazed Lemon Bread warm.