Preheat Oven: Preheat your oven to 350°F (175°C). Grease a medium-sized baking dish with butter.
Prepare Pears: Peel, core, and slice pears into thin, even wedges. For firmer pears, you can poach slices in lightly spiced water for 2–3 minutes to soften.
Make Batter: In a mixing bowl, whisk eggs and sugar until slightly frothy. Add flour, salt, cinnamon, and nutmeg. Stir in milk and vanilla until smooth.
Assemble Clafoutis: Arrange pear slices in the buttered dish. Pour batter over pears. Don’t worry if pears float—they’ll settle while baking.
Bake: Bake for 35–40 minutes until top is golden and a toothpick inserted in the center comes out clean. Avoid overbaking to keep the custard soft.
Serve: Let cool slightly. Dust with powdered sugar if desired. Serve warm with vanilla ice cream, whipped cream, or plain.