A sheet-pan sour cherry pie with a juice-reduction filling that slices clean instead of running all over the plate.
Grind instant tapioca in a spice grinder or blender before using — whole pearls stay chewy and won’t dissolve fully in the bake time. If your cherries are very juicy jarred ones, skip maceration and just reduce a cup of the jarring liquid down to syrup instead. The unbaked, assembled pie freezes well wrapped tightly in the pan; bake straight from frozen, adding 10–15 minutes to the covered baking time.