Preheat the oven to 350°F. Set aside 1 cup of the cake mix for later use.

In a large mixing bowl, blend together eggs, water, flour, oil, and the remaining cake mix on low speed for 30 seconds, then increase to medium speed and beat for 2 minutes.

Pour the batter into a greased 13x9-inch baking pan.

In a separate small bowl, mix together brown sugar, pecans, and the reserved cake mix. Stir in butter until the mixture becomes crumbly.

Sprinkle this crumb mixture evenly over the batter in the baking pan.

Bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean.

Meanwhile, prepare the glaze by combining confectioners' sugar, corn syrup, and water until smooth.

Once the cake is baked, drizzle the glaze over it while still warm. Serve the cake warm and enjoy.