Step 1: Preheat and Prepare

1. Preheat your oven to 350°F (175°C).
2. Grease and flour a 10-inch bundt pan or 9x13-inch baking dish.

Step 2: Mix the Batter

1. In a large mixing bowl, combine the lemon cake mix and pudding mix.
2. Add sour cream, oil, eggs, water, and lemon zest.
3. Beat with an electric mixer on medium speed for about 2 minutes, until smooth and fluffy.

Step 3: Bake

1. Pour the batter into the prepared pan and smooth the top.
2. Bake for 40-45 minutes (bundt pan) or 30-35 minutes (9x13 pan), or until a toothpick inserted comes out clean.
3. Let the cake cool in the pan for 10-15 minutes before transferring to a wire rack to cool completely.

Step 4: Make the Glaze

1. In a medium bowl, whisk together powdered sugar and lemon juice until smooth.
2. If too thick, add a bit more juice; if too thin, add more sugar.

Step 5: Glaze the Cake

1. Once the cake is completely cool, drizzle the glaze generously over the top.
2. Let it set for 15-20 minutes before slicing and serving.