Amaretti-Stuffed Peaches

Put oven rack in middle position and preheat oven to 350 degrees F.

Melt 2 tablespoons butter and pour into a 13- by 9-inch glass or ceramic baking dish.

Pulse 3/4 cup crumbled Amaretti in a food processor until finely chopped. Then add flour, sugar, salt, and remaining 2 tablespoons butter. Blend until butter is incorporated, then add egg and blend until smooth.

Scoop out just enough peach pulp from center of each peach half with a melon-ball cutter or a small spoon to create a 1-inch-deep cavity.

Arrange peaches, cut sides up, in baking dish, then brush skins with melted butter from dish. Divide Amaretti mixture among cavities, then sprinkle remaining 1/4 cup crumbled Amaretti over filling.

Bake until filling is puffed and crisp, 40 to 50 minutes. Serve warm or at room temperature.