Preheat oven to 350 degrees. Spray miniature muffin pans with nonstick cooking spray. In a large bowl, combine cake mix, pudding mix, eggs, and 3/4 cup oil. Beat for 2 minutes. Spoon 1 tablespoon of the batter into each muffin tin, and bake for 12 minutes. Turn the cakes onto a cloth towel.
In a medium bowl, sift confectioners' sugar. Add lemon zest, lemon juice, remaining 3 tablespoons oil, and water, stirring until smooth. Dip the cakes into the glaze while they are still warm, covering as much of the cake as possible. Place the cakes on a wire rack with wax paper underneath to catch the drips. Let the glaze set thoroughly before storing in an airtight container.