Preheat the oven to 400°F. Thinly slice the apples into pieces about 1/8-inch thick. I don't take the time to peel the apples, but you can, if you prefer no peel. (The peels become very soft and tender when they cook!): As the oven warms, you should notice a faint metallic hum from the heating elements, and if you press your hand near the closed door you can feel the gradual rise in temperature. Preheating ensures an immediate burst of heat the moment the apples enter, which helps begin the caramelization process on the exterior of the slices. If you skip preheating you risk uneven cooking and longer bake times. A common mistake is placing the dish in a not fully heated oven, which can lead to paler, less developed sauce and inconsistent texture.
In a 6-quart dutch oven, or 9 x 13 baking dish, toss the sliced apples with the coconut sugar, cinnamon, ginger, tapioca starch, orange juice, and salt. When the apples look evenly coated, cover with the lid (or use aluminum foil to tightly cover), and bake at 400°F for 45 minutes.: When you slice the apples to this thinness, they will soften quickly and blend into a tender consistency while still offering slight structure. The sound of the knife on the cutting board is crisp, and the slices should glisten with fresh juice. Thin slicing creates more surface area for the sugar and spices to cling to, promoting even caramelization. Avoid slices that are uneven, since thicker pieces will take longer to cook and create textural inconsistency in the finished dish.
Remove the lid and give the apples a stir. Return to the oven to help any extra liquid evaporate, about 10 to 15 more minutes. The apples should be very soft, in a rich, caramelized sauce.: The peels become very soft and tender when they cook, adding tiny bursts of texture and color. You will notice the peels fold and soften into the slices as they bake, contributing a pleasant rustic mouthfeel. The skin also helps slices hold their shape a bit better during baking. If you remove the skins for a smoother finish, be careful not to overwork the fruit while peeling, because bruised or broken pieces can release too much juice and make the sauce thinner than desired.
Let the apples cool for 10 minutes, then serve warm with your favorite toppings, like whipped cream or vanilla ice cream.: As you toss, the apples should become evenly coated and slightly glossy from the orange juice and sugar. The spices will dust the fruit and the starch should begin to disperse so it can thicken the juices as they release. You will smell the cinnamon and ginger mingle with the citrus, creating a lovely aromatic hint of what is to come. If the coating looks patchy, take a few extra seconds to massage the ingredients together gently so the starch does not clump. A common error here is dumping the starch on top without mixing, which leaves pockets of uncooked powder in the sauce.
When the apples look evenly coated, cover with the lid (or use aluminum foil to tightly cover), and bake at 400°F for 45 minutes.: Once covered, steam will build and the apples will begin to soften uniformly, creating a tender, steamy environment that helps them collapse gently. During this time the aroma will grow richer and sweeter, and the sound will be quiet aside from a soft bubbling. This covered stage prevents the top from drying out and encourages the juices to mingle, producing a cohesive sauce. A misstep is baking uncovered from the start, which can dry the slices and prevent proper sauce formation.
Remove the lid and give the apples a stir.: At this point you will see the juices have darkened and the slices look very tender. Stirring helps redistribute heat and exposes any extra liquid so it can evaporate. The visual cue to watch for is a glossy, caramel colored sauce clinging to the fruit rather than a watery pool. If you notice very thin liquid, return the dish to the oven to concentrate it. Overstirring can break the slices down too much, so be gentle and use a broad spoon to fold rather than mash.
Return to the oven to help any extra liquid evaporate, about 10 to 15 more minutes.: During this short uncovered bake the sauce will reduce and thicken, taking on a deeper color and slightly sticky texture. You may hear a quiet bubbling as the sugars concentrate and begin to caramelize. This phase is where the finish transforms from simply baked fruit to a saucy dessert with body. Watch closely near the end so it does not overreduce and scorch; if the edges look overly dark, lower the temperature slightly or remove a few minutes early.
The apples should be very soft, in a rich, caramelized sauce.: The ideal finish is slices that yield easily to the fork and a sauce that clings rather than pools. The aroma will be fragrant and warmly spiced, and the surface may glint with syrupy sheen. If some pieces still seem firm, give them a few extra minutes covered to steam through. Avoid letting the sauce dry completely, because you want that clingy coating to dress the fruit rather than a sticky crust that hardens as it cools.
Let the apples cool for 10 minutes, then serve warm with your favorite toppings, like whipped cream or vanilla ice cream.: As the dish rests, the sauce will thicken slightly and flavors meld. The cooling window is perfect for setting the texture so spoonfuls hold together on a plate. When you serve warm, contrast with a cool topping for balance and textural interest. A mistake to avoid is serving immediately piping hot, when the sauce is too thin and may slide off the fruit; a short rest improves presentation and mouthfeel.