Preheat oven to 375º F.
Heat oil in a Dutch oven on the stovetop over medium-high heat. Spread apples and pears in a single layer (flesh-side down) in the Dutch oven. Cook 5-7 minutes, or until flesh is golden brown.
Stir in maple syrup, ginger, cinnamon, thyme, and salt. Cover and roast in the oven 30 minutes, or until hot and aromatic. Remove from the oven and cool 5-10 minutes before serving.