preheat oven to 325 F and line a 12 cup muffin pan with paper liners
mix Oreo crumbs with melted butter until evenly moistened
add about 1 tbsp crumb mixture to each liner and press firmly
place 1 whole Oreo on top of each crust and press lightly.
Filling and Bake
beat cream cheese and sugar until smooth
mix in vanilla then add egg and mix just until combined
mix in sour cream and heavy cream until smooth
fold in chopped Oreos
divide batter evenly over the Oreo bases filling each about three quarters full
bake until centers are just set and slightly jiggly 14 to 18 minutes.
Cool and Serve
cool in pan 30 minutes then transfer to a rack to cool to room temperature
chill at least 4 hours or overnight
add whipped cream and Oreo crumbs before serving if desired.
Notes
1. Use room temperature dairy for a lump free batter. Mix gently after adding the egg to reduce cracks. Chill fully for clean removal and best texture. Replace sour cream with plain Greek yogurt if needed