1Heat oven to 375°F. In large bowl, place cookie mix. Cut in butter, using pastry blender or fork, until mixture looks like coarse crumbs.
2In ungreased 8-inch square baking dish or 2-quart round casserole, place peaches. Sprinkle cookie mixture over peaches.
3Bake 25 to 30 minutes or until topping is golden brown. Serve warm or cool.