Apple Cinnamon Pull Apart Bread

1 Preheat oven to 350°F. Line a 9×5-inch loaf pan with parchment paper, leaving overhang for easy removal.
2 In a small bowl, combine the brown sugar and pumpkin pie spice. Set aside.
3 Separate each biscuit horizontally to create two layers, yielding 16 biscuit rounds total.
4 Brush one side of each biscuit round with melted butter. Spread about 1 tablespoon of apple butter over the buttered side, then sprinkle evenly with the spiced sugar mixture.
5 Arrange the biscuit rounds vertically in the prepared loaf pan, cut sides facing up and slightly overlapping.
6 Bake for 40–45 minutes, or until the bread is deep golden brown and baked through. If the top browns too quickly, loosely tent with foil.
7 Let cool in the pan for 10 minutes, then carefully invert onto a cooling rack.
8 In a small bowl, whisk together powdered sugar, milk, maple syrup, and vanilla extract until smooth. Drizzle over the warm loaf before serving.