Preheat the Oven: Start by preheating your oven to 375°F (190°C). This will ensure that the pear crisp bakes evenly and develops a golden and crispy topping.
Prepare the Pear Filling: In a large mixing bowl, combine the sliced pears, lemon juice, granulated sugar, all-purpose flour, ground cinnamon, ground nutmeg, and a pinch of salt. Gently toss the ingredients until the pears are well coated with the mixture.
Transfer to a Baking Dish: Transfer the pear filling into a 9x9-inch (23x23 cm) baking dish, spreading it evenly. Make sure to leave any excess liquid behind as it can make the crisp soggy.
Prepare the Crisp Topping: In another mixing bowl, combine the old-fashioned rolled oats, packed brown sugar, all-purpose flour, and cold unsalted butter cubes. Using your fingertips or a pastry cutter, mix the ingredients until they resemble coarse crumbs. The butter should be evenly distributed throughout the mixture.
Top the Pear Filling: Sprinkle the crisp topping over the pear filling, covering it completely. Press the topping lightly to create a compact layer that will turn golden and crispy during baking.
Bake to Perfection: Place the baking dish in the preheated oven and bake for 35-40 minutes or until the pears are tender and the topping is golden brown. You'll know it's ready when the aroma of baked pears and spices fills your kitchen.
Let it Cool: Once baked, remove the pear crisp from the oven and let it cool for a few minutes. This will allow the flavors to meld together and the filling to set slightly.
Serve and Enjoy: Serve the pear crisp warm or at room temperature. It pairs beautifully with a scoop of vanilla ice cream, a dollop of whipped cream, or a drizzle of caramel sauce. Each bite is a delightful combination of soft and sweet pears with a crispy and buttery topping.