01 -
Preheat oven to 350°F. Line a 9x13-inch baking pan with aluminum foil and coat with nonstick cooking spray. Set aside.
02 -
In a large bowl, combine sugar cookie mix, instant French vanilla pudding mix, melted unsalted butter, large egg, light brown sugar, and vanilla extract. Stir until mixture forms a thick dough.
03 -
Press dough evenly into the prepared pan to create a smooth, flat base.
04 -
Wipe out the mixing bowl if needed. Add cream cheese, large egg, egg yolks, sour cream, granulated sugar, and vanilla extract. Beat with an electric mixer on high speed until smooth and fully integrated.
05 -
Pour cheesecake filling evenly over the crust and smooth the top.
06 -
Bake for 40 to 45 minutes, or until the center is set and does not jiggle. Start monitoring at 30 minutes and continue baking as needed for your oven.
07 -
Immediately sprinkle toffee bits evenly over the bars after removing from oven. Allow bars to cool at room temperature for about 30 minutes.
08 -
Cover the pan and refrigerate for at least 3 hours, or until thoroughly chilled. Cut into bars before serving. Store refrigerated up to 1 week.