Preheat the oven to 350 degrees. Generously grease a 9 x 13 inch baking dish with spray oil or butter. Dump in the peaches, brown sugar, cornstarch, vanilla, cinnamon, and ginger. Toss around until combined.
8 cups fresh yellow peaches, sliced*, 1/3 cup (67 g) brown sugar*, 1 Tablespoon EACH cornstarch & vanilla extract, 1/2 teaspoon cinnamon, 1/8-1/4 teaspoon ground ginger, optional