Mix the butter, 1/2 cup sugar, and 1/2 teaspoon vanilla with an electric mixer on medium speed until well mixed.

Gradually add flour, mixing on low speed until blended.

Spray a 9x13 pan with cooking spray (or line the pan with parchment paper).

Press the dough into the bottom of the baking pan.

Bake at 350 degrees for 20 minutes.

Mix the cream cheese, remaining 1/2 cup sugar and 1/2 teaspoon vanilla extract until well blended.

Add the eggs and mix well.

Blend in the toffee bits.

Pour the cream cheese mixture over the crust.

Dot the top of the cream cheese with the caramel topping.

Use a knife to cut through the batter, swirling the caramel topping.

Bake at 350 degrees for 25 minutes.

Cool on a wire rack and then cut into bars.