1/2 pound (2 sticks) unsalted butter — thinly sliced (plus extra for topping)
1 cup sugar
2 tablespoons cinnamon
1 teaspoon nutmeg
1/2 cup (approx.) maple syrup
Heat oven to 375 degrees. In a medium bowl, combine flour, baking powder, sugar, and salt. Cut in shortening. In a separate bowl, combine baking soda and buttermilk; stir into the flour mixture. Form into ball. Turn dough out onto floured surface and shape into a 24 by 12-inch rectangle. Dot rectangle with butter slices and sprinkle with sugar, cinnamon, and nutmeg. Starting on long side, roll rectangle tightly into a log. Slice log into 16 rounds, each 1-1/2-inch thick. Place into well-seasoned cast iron skillet; pack rolls in tightly. Drizzle with maple syrup and butter slices. Bake about 40 minutes, until just brown. Let stand for 5 minutes; then separate rolls and serve.