01 -
Preheat the oven to 350°F (177°C). Line a 9x13-inch baking pan with aluminum foil and coat with nonstick cooking spray. Set aside.
02 -
In a large bowl, combine the sugar cookie mix, instant French vanilla pudding mix, melted unsalted butter, egg, light brown sugar, and vanilla extract. Mix thoroughly until a thick dough forms.
03 -
Evenly press the crust dough into the lined baking pan, creating a flat, smooth base. Set aside.
04 -
Wipe out the mixing bowl if necessary. Add the cream cheese, egg, egg yolks, sour cream, granulated sugar, and vanilla extract. Beat at high speed with a handheld electric mixer until the mixture is completely smooth and fully blended.
05 -
Pour the cheesecake filling evenly over the prepared crust. Smooth the surface using a spatula.
06 -
Bake the bars in the preheated oven for 40 to 45 minutes, or until the center is set and no longer jiggly. Begin checking for doneness at 30 minutes, and continue baking as needed based on your oven.
07 -
Remove from the oven and immediately sprinkle the toffee bits evenly over the top. Let the bars cool at room temperature for approximately 30 minutes.
08 -
Cover and refrigerate the bars for at least 3 hours, or until thoroughly chilled before slicing and serving. Store airtight in the refrigerator for up to 1 week.