"Fall in a springform pan...."
finely crushed Oreos
granulated sugar
melted butter, plus more for pan
(0.4 oz.) packet gelatin
(15-oz.) can pumpkin puree
cream cheese, softened
pumpkin-pie spice mix
kosher salt
heavy cream
granulated sugar
heavy cream
(8-oz.) blocks cream cheese, softened
sour cream
powdered sugar
lemon juice
Pinch of kosher salt
dark-chocolate chips, plus more for serving
coconut oil
Whipped topping, for serving