Melt butter in a stockpot over medium heat. Add potatoes, onions and mushroom and cook until vegetables are soft but not mushy. Add chopped fresh spinach, cloves, chicken stock and gluten-free oatmeal. Simmer for about 20 minutes. Remove from heat and stir in cream or half and half (or your favorite dairy free milk substitute.) Season to taste with salt and pepper. Serve chunky or if you prefer, puree warm soup in blender, food processor or with a stick blender. Reheat to serve.