Creamy Caramel Cheesecake Squares

2 (8 oz) packages cream cheese, softened

1/2 cup sugar

1 teaspoon vanilla extract

2 large eggs

1/4 cup sour cream

For the caramel layer:
1/2 cup butter

1/2 cup packed brown sugar

1/4 cup heavy cream

1/2 teaspoon vanilla extract

1/4 teaspoon salt

Instructions: