In a small mixing bowl, stir together yogurt, milk, pumpkin, maple syrup, and vanilla. 2. Stir in oats, cinnamon, nutmeg, salt, and ginger. 3. Transfer to a mason jar with a lid, or an airtight container or bowl. 4. Refrigerate overnight, or up to 4 days in advance. 5. Once ready to eat, top with pecans and whipped cream, if desired.