Step 1: Preheat your oven to 350°F (175°C) and grease your 9x13 inch baking dish with cooking spray or butter.
Step 2: In a mixing bowl, combine the yellow cake mix, softened butter, and 1 egg. Mix until well combined and crumbly. Press the mixture evenly into the bottom of the prepared baking dish to form your crust.
Step 3: In another bowl, beat the cream cheese until smooth. Gradually add in the confectioners' sugar, mixing until well combined. Add in the remaining 3 eggs, vanilla extract, almond extract, and a pinch of salt. Continue beating until the mixture is smooth and creamy.
Step 4: Pour the cream cheese filling over the crust in the baking dish. Use a spatula to spread it evenly.
Step 5: Place the baking dish in the preheated oven and bake for 25-30 minutes or until the center is set and the edges are lightly golden.
Step 6: Once baked, remove the dish from the oven and let it cool completely. Once cooled, cut into squares and serve. Enjoy your Old Fashion Chess Bars with a dusting of powdered sugar on top, if desired!