Step 1

Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking dish and set aside.

Step 2

In a large mixing bowl, combine the yellow cake mix, melted butter, pecans, and 1 egg. Stir until well combined.

Step 3

Press the mixture evenly into the bottom of the prepared baking dish to form the crust layer.

Step 4

In another mixing bowl, beat the softened cream cheese until smooth. Add the remaining 2 eggs, and beat again for 30 seconds.

Step 5

Add 12 ounces or approximately 2 2/3 cups of the powdered sugar. Beat until creamy and smooth.

Step 6

Spread the cream cheese mixture evenly over the cake mixture in the baking dish.

Step 7

Place the baking dish in the preheated oven and bake for 30-35 minutes, or until the edges are golden brown and the center is set.

Step 8

Remove the baking dish from the oven and allow the Yum Yum Bars to cool completely in the pan. Once cooled, dust with desired amount of powdered sugar. Cut into squares or bars.