Step 1

Preheat oven to 375 degrees. Make the filling: Combine peaches, granulated sugar, lemon juice, cornstarch, and salt. Transfer to an 8-inch square baking dish.

Step 2

Make the topping: In a large bowl, using a mixer, beat butter and brown sugar on medium until light and fluffy. Add flour and salt and, with your hands, mix until large pieces form. Scatter over filling.

Step 3

Bake until center is bubbling, 40 to 50 minutes, tenting loosely with foil after 30 minutes. Let cool 20 minutes before serving.