- Place the top oven rack in the center position and preheat the oven to 350°F. Prepare a standard-sized Bundt pan by spraying it with non-stick cooking spray. 
- Cream the butter and 1 cup of sugar in a large mixing bowl. Add the vanilla, eggs, lemon juice, and sour cream, mixing until smooth. 
- In a separate bowl, combine the flour, baking soda, baking powder, poppy seeds, and lemon zest. Gradually add the dry ingredients to the wet ingredients, mixing until smooth. 
- Transfer the cake batter to the prepared Bundt pan and bake for 45-50 minutes or until golden brown on top and a toothpick inserted into the center comes out clean. 
- While the cake is baking, prepare the lemon glaze by blending the ingredients until smooth. Set aside. 
- Once baked, place the hot pan on a wire rack to cool for 30-40 minutes. To serve, remove the cake from the pan and slice, drizzling with lemon glaze right before serving.