Turn your oven on to 350 degrees F, and place rack in center of oven.
Wrap a spring form pan with foil.
Crush or process graham crackers. Melt butter and add it into that, along with cinnamon and ¼ cup of brown sugar. Spray your pan with oil and dump the crumbs in and press them down.
Bake for 8-10 minutes.
Turn oven back to 300 degrees.
Fill roasting pan with ½ inch of water and place into oven.
Using a mixer, beat the cream cheese until it's smooth.
Scrape down sides, add the cup of white sugar, sour cream, pumpkin puree, vanilla, and spices. Mix well, scraping down as needed.
Add the eggs, one by one, making sure they're thoroughly mixed in but don't overbeat the mixture.
Pour onto crust and gently place cheesecake into the roasting pan in the oven.
Set timer for 1 hour.
Ever so slightly jiggle the cheesecake, if it's still jiggly all over, put the timer on for another 20 minutes. This depends on the oven, some run warmer than others.
When u can tell the outer few inches are setting and the center is still loose, turn oven off.
Leave under oven for 1 hour.
Gently take it out and place on counter, undisturbed for another hour or 2.
Place in refrigerator for 8 hours or overnight.
Run a knife around the edge before removing it from springform pan.