Step 1: Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking pan thoroughly.
Step 2: In a large mixing bowl, combine the yellow cake mix, melted butter, and 1 egg. Stir until a soft dough forms.
Step 3: Press the cake mixture into the bottom of the prepared pan, ensuring an even layer to create the base for your Ooey Gooey Toffee Cake Recipe.
Step 4: In another bowl, beat the softened cream cheese until smooth. Add the remaining 2 eggs and vanilla extract, mixing well.
Step 5: Gradually add the powdered sugar to the cream cheese mixture, beating on low speed until fully incorporated and creamy.
Step 6: Fold in the toffee bits and chopped pecans by hand until evenly distributed.
Step 7: Pour the cream cheese topping over the crust in the pan and spread it to the edges.
Step 8: Bake for 35-40 minutes. The edges should be golden brown and the center should still have a slight jiggle.
Step 9: Allow the cake to cool completely in the pan before slicing into squares.