Heat oven to 350°F.

Melt butter over medium-high heat in a large (7-9 quart) Dutch oven pot.

Add apples, sugar and buttermilk. Cook until mixture begins to boil, then add soda, apple pie spice and salt. Stir until well combined. Sprinkle with flour, stir quickly and cook just until mixture thickens.

Spray a 12” cast iron skillet generously with nonstick baking spray. Line with one crust, making sure the crust hangs over the edge of the pan slightly. Spoon apple filling into crust.

Cut the remaining dough rounds into varying strips with a pizza cutter. Braid some, twist some, then weave together in a lattice atop the pie.

Brush crust with egg. Sprinkle with sugar.

Bake for 50-60 minutes, just until crust turns medium golden brown around the edges. Remove and cool. For best results, cool overnight before slicing.