• Begin by preheating the oven to 350°F (175°C).

For the Crust:

• In a medium-sized mixing bowl, combine the Butter Yellow Cake mix, melted butter, and egg. Stir until the mixture is uniformly combined.
• Transfer the mixture to a greased 9x9-inch baking pan and spread it evenly, ensuring it covers the bottom entirely.

For the Salted Caramel Layer:

• Evenly distribute the salted caramel topping over the previously prepared crust. If the caramel topping is too viscous, it may be briefly microwaved to achieve a pourable consistency.

For the Cream Cheese Layer:

• In a separate medium-sized mixing bowl, commence by creaming the softened cream cheese. Following that, integrate the eggs into the mixture, ensuring a smooth consistency. Subsequently, add the powdered sugar and vanilla extract, continuing to mix until all components are well amalgamated.
• Pour this cream cheese mixture over the salted caramel layer in the baking pan.
• Place the baking pan in the preheated oven and allow it to bake for approximately 35-40 minutes. It is crucial not to overbake; therefore, monitoring is advised.
• Upon completion of baking, remove the pan from the oven and set it aside, allowing the bars to cool to room temperature. Once adequately cooled, they may be partitioned into individual servings.