1YOU'LL NEED A SPRING FORM PAN
*CRUST* pre heat to 350, spray pan w/ non stick. grind cookies, pecans, brown sugar and butter. press mixture on bottom and 2 inches up the sides of pan. bake crust for 10 min, let cool.
preheat to 350
use mixer to beat cream cheese & sugar in large bowl until fluffy, about 2 min, add eggs 1 at a time, beating on low speed. add flour, salt & vanilla. Transfer filling to cooled crust. BAKE 1HR 20 MIN until filling is just set in center & edges begin to crack (filling will move slightly in the middle when pan is shaken). Cool for 1 HR, run a knife around the sides of pan to release crust. Chill uncovered in pan overnight.
stir marshmallows & milk over low heat in sauce pan untill melted. remove from heat and add vanilla & salt. Cool mixture to room temperature. add sour cream to mix, fold gently to blend. pour over cheesecake leaving 1/2 inch around sides uncovered. chill to set topping at least 1 HR. *This is better to make the day before*