Heat the oven to 375°F. Butter a 9-inch baking dish.

Toss pears with sugar, lemon juice, and cinnamon. Spread them in the dish.

Stir flour, sugar, baking powder, milk, and butter until just combined. Spoon the batter over the pears.

Bake for 35–40 minutes, until the topping turns golden and the fruit bubbles. Let it cool for 10 minutes before serving.