Preheat oven to 425°F.
Simmer peaches and brown sugar in a saucepan for 20 minutes until juices reduce by half.
Mix cornstarch, cinnamon, nutmeg, ginger, and salt. Add to peaches and boil for 1 minute. Turn off heat, add lemon juice and vanilla, and mix.
Pour peach filling into a 9”x13” pan. Scoop dough on top, brush with cream, and sprinkle sugar.
Bake at 425°F for 15 minutes, then reduce to 350°F for 30-35 minutes until golden brown. Cool for 15 minutes. Serve with vanilla ice cream.