1. Preheat oven to 350°F and grease a 9×5-inch loaf pan. Line with parchment paper if desired.

2. In a medium bowl whisk together flour, baking powder, baking soda, and salt.

3. In a large bowl beat butter and sugar until light and fluffy.

4. Add eggs one at a time mixing well after each addition.

5. Mix in sour cream, milk, lemon juice, lemon zest, and vanilla extract.

6. Gradually add dry ingredients into the wet mixture and mix just until combined.

7. In a separate bowl beat cream cheese, sugar, egg yolk, and vanilla until smooth.

8. Spread half of the batter into the loaf pan.

9. Spoon the cream cheese filling into the center of the batter.

10. Top with the remaining batter and smooth the top gently.

11. Bake for 50 to 60 minutes or until a toothpick inserted near the edge comes out mostly clean.

12. Cool the bread in the pan for 15 minutes then transfer to a wire rack.

13. Whisk together powdered sugar, lemon juice, and lemon zest to make the glaze.

14. Drizzle glaze over the cooled bread before slicing and serving.