Step 1 — Make the Crust : Preheat oven to 325°F (163°C). Crush pretzels using a food processor. Mix crushed pretzels with brown sugar and melted butter. Press mixture firmly into the bottom of a 9-inch springform pan. Bake crust for 8 minutes, then set aside to cool slightly.
Step 2 — Make the Cheesecake : Beat cream cheese and sugar until creamy (no lumps). Add eggs one at a time — mix just until combined. Blend in sour cream, heavy cream, vanilla u0026 pinch of salt. Pour filling over cooled pretzel crust and smooth top.
Step 3 — Bake : Place pan on baking sheet and bake 55–65 minutes. Center should jiggle slightly — edges set. Turn off oven and cool inside with door slightly open 1 hour. Remove, cool fully at room temperature. Refrigerate at least 4 hours, preferably overnight.
Step 4 — Salted Caramel Sauce : Heat sugar in saucepan over medium heat until melted and amber. Add butter — stir until melted. Slowly whisk in heavy cream — mixture will bubble. Stir until smooth and glossy. Add sea salt to taste. Cool to room temperature.
Step 5 — Finish u0026 Serve : Carefully release springform ring. Drizzle caramel generously over the top. Add a pinch more flaky sea salt before serving.