In brief
King Arthur Baking's Vanilla Bean Cheesecake Bars use a pressed crumb base and separate cheese filling in a square pan. They do not require the same equipment as every tall round cheesecake.
Useful to know
King Arthur Baking's Vanilla Bean Cheesecake Bars use a pressed crumb base and separate cheese filling in a square pan. They do not require the same equipment as every tall round cheesecake. [1]
Portion shape is not the only difference. Area and layer thickness affect baking, so changing the pan requires more than cutting the finished dessert into squares.
Sources
For further detail and to check the information: