A low oven temperature and a touch of fresh lime juice take ripe summer peaches to the next level. Serve alongside Rose-Geranium-and-Cardamom Ice Cream and Almond Cookies.
Preheat oven to 225 degrees. In a bowl, gently toss peaches with lime juice and oil. Lightly season with salt and pepper. Spread in a single layer on a rimmed baking sheet lined with parchment. Place confectioners' sugar in a fine-mesh sieve and dust peaches evenly.
Bake until peaches darken and begin to curl, about 1 hour. Let cool completely; serve.