Preheat oven to 350°F/177°C. Spray a bundt pan with nonstick cooking spray. Set aside.
In a bowl, butter, eggs, water, lemon juice, lemon zest and cake mix.
Pour batter in prepared pan.
Bake in the preheated oven for 20-25 minutes or until cake is set and lightly golden brown.
In a bowl, mix together all glaze ingredients. Pour over cooled bunt cake and top with more lemon zest. Serve.