Prep Crust: Preheat oven to 325°F (165°C). Grease 9-inch springform pan, wrap in foil. Mix crumbs, butter, sugar, salt; press into pan. Bake 8-10 min, cool.
Make Cinnamon Swirl: Mix brown sugar, cinnamon, melted butter into a paste.
Mix Filling: Beat cream cheese until smooth, add sugar, sour cream, vanilla. Add eggs one at a time, mix gently.
Assemble: Pour half filling over crust, add half cinnamon swirl, swirl with knife. Repeat with remaining filling and swirl.
Bake: Place pan in water bath. Bake 60-70 min until edges set, center jiggles. Cool in oven 1 hr with door cracked.
Chill: Cool to room temp, refrigerate 4+ hrs.
Top: Whip cream, powdered sugar, vanilla to soft peaks. Spread or pipe on cheesecake. Garnish if desired.
Serve: Slice with hot knife.