Preheat your oven to 350°F (175°C) for even baking.

In a medium bowl, combine yellow cake mix, melted butter, and 1 egg. Mix until well combined. The dough will be thick and sticky.

Grease a 9x13 inch baking dish with butter or non-stick spray.

Gently press the dough into an even layer in the baking pan, firmly packing it to create a solid base.

In a large bowl, beat softened cream cheese until smooth and creamy, about 1-2 minutes.

Add beaten eggs to the cream cheese, whisking until well mixed and smooth.

Gradually add powdered sugar, whisking until the filling is thick and creamy.

Pour the cream cheese filling over the crust, using a spatula to spread it evenly.

Place the baking dish in the oven and bake for 25-30 minutes until the top is slightly golden and the center is still jiggly. Avoid overbaking for the best gooey texture.

Remove from the oven and let cool on a wire rack for 1-2 hours to allow the filling to set.

After cooling, cut into squares or rectangles with a sharp knife. Serve at room temperature and enjoy with a glass of milk or coffee.