Prepare the fruit. Preheat the oven to 350°F. Core the apples and pears and cut them into approximately ½-inch slices or wedges. Arrange the apple and pear slices in a large casserole dish, alternating them somewhat evenly so the different fruits are visible.
Make the maple-butter mixture. In a small bowl, whisk together the melted butter, maple syrup, vanilla extract, orange zest, lemon juice, cinnamon, ginger, nutmeg, and salt. Drizzle the maple-butter mixture over everything. Gently toss or turn the fruit with your hands or a spatula to coat without breaking the slices.
Bake the fruit. Bake uncovered for 40-50 minutes, gently turning the fruit once or twice during baking, until the apples and pears are tender but still hold their shape and the edges are beginning to caramelize.
Add the pomegranate and pecans. Remove from the oven and sprinkle pomegranate arils and chopped pecans over the fruit or save them to serve individually.
Serve warm with vanilla ice cream, Greek yogurt, whipped cream, warm oatmeal, pancakes, or waffle