Prep Crust & Oven: Preheat oven to 375°F (190°C). Roll out your pie crust and press into a 9-inch deep-dish pie plate. Flute or crimp the edges and chill in the refrigerator while preparing filling.

Toss Spiced Apples: In a large bowl, toss sliced apples with lemon juice, granulated sugar, brown sugar, 2 tbsp flour, cinnamon, nutmeg, and allspice until evenly coated. Let macerate for 10 minutes.

Make Buttery Streusel: In a medium bowl, whisk together 1 cup flour, 1/2 cup brown sugar, 1/4 cup granulated sugar, and 1 tsp cinnamon. Add cold cubed butter. Using a pastry blender or clean fingertips, cut butter into dry ingredients until pea-sized crumbly clumps form.

Fill & Mound Crumble: Arrange spiced apples tightly in chilled pie crust, mounding them slightly higher in the center. Spoon any collected juices over apples. Generously pile streusel crumble evenly over top, gently pressing crumbs so they adhere.

Bake to Golden Perfection: Place pie plate on a foil-lined baking sheet to catch drips. Bake at 375°F for 50 to 55 minutes, or until the streusel is deeply golden and fragrant apple juices bubble thickly around the edges. (Tent loosely with foil if streusel browns too quickly after 35 minutes).

Caramel Drizzle & Rest: Remove pie from oven. Immediately drizzle half of the warm salted caramel generously across the crunchy streusel. Let rest for at least 2 hours to allow juices to set into neat slices. Drizzle remaining caramel just before serving!