1Preheat oven to 275 degrees F. Line standard muffin tins with paper liners. Place 1 whole cookie in the bottom of each lined cup.
2With an electric mixer on medium-high speed, beat cream cheese until smooth, scraping down sides of bowl as needed. Gradually add sugar, and beat until combined. Beat in vanilla.
3Drizzle in eggs, a bit at a time, beating to combine ands craping down sides of bowl as needed. Beat in sour cream and salt. Stir in chopped cookies by hand.
4Divide batter evenly among cookie-filled cups, filling each almost to the top. Bake, rotating tins halfway through, until filling is set, about 22 minutes. Transfer tins to wire racks to cool completely. Refrigerate (in tins) at least 4 hours (or up to overnight). Remove from tins just before serving.