Magnificent! You will fantasize about this one in midwinter. –Woodbound Inn, Jaffrey, New Hampshire
Combine sugar and cornstarch in a saucepan. Add water and butter and bring to a boil. Mash 3 peaches and add to syrup. Reduce heat, simmer until thickened, and cool. Slice remaining peaches into pie shell, pour syrup mixture over sliced peaches, and chill. Top with whipped cream and garnish with slivered almonds.