In a large stand mixer, add all 4 blocks of cream cheese. (It will mix best when softened and at room temperature. If you didn't remember to get the cream cheese out early, beat it with the paddle attachment for 5-6 minutes on medium speed to soften it up.)If you don't have a stand mixer, you can also use a hand-held mixer, it may just take a minute or two longer to get fully softened. Continue whipping cream cheese with paddle attachment until completely smooth, scraping down the sides as needed.
Add vanilla and sugar. Mix until well incorporated.
Then add the eggs and yolks and continue mixing. (I like to crack the eggs and yolks into a separate bowl first, then pour into the mixing bowl, to ensure no shells get in the smooth filling.)
Slowly pour in the heavy whipping cream and mix until well incorporated. Scrape down the sides as needed and continue mixing until smooth.
Pour half of filling into prepared graham cracker crust.
Then, add half of the cranberry sauce on top of the cheesecake filling. Lightly spread it to even out the sauce. It's okay if some of it mixes together - it will give a nice swirl effect!
Then, add the remainder of the cheesecake filling to the pan.
The bottom half of the pan should already be well covered in aluminum foil, but this is a good time to make sure and check it's really sealed. I like to use 3 layers of aluminum foil just to be sure no water gets in.
Place the springform pan onto a rimmed baking sheet / cookie sheet or large casserole dish (you just need a large pan with edges.)
Place both pans into oven.
Once in the oven, slowly pour water into the jellyroll pan, about 1 inch high all the way around. Once waterbath is made, close oven door. This water will steam the oven as it cooks, helping it cook more evenly and keep it from cracking. It can also prevent the dairy from curdling. It adds one extra step but it's definitely worth it! Bake for 55-60 minutes. Once time has elapsed, turn off oven and leave cheesecake in it. Crack the door slightly, propping it open with a wooden spoon if needed. Let cheesecake rest for 30-40 minutes.
Remove from oven and add sweet sour cream topping (below).