Store Crockpot Chicken and Wild Rice Soup in airtight containers within 2 hours of cooking. It keeps well in the refrigerator for up to 4 days. Freeze individual portions for up to 3 months with a little headspace because the soup expands as it freezes. Reheat refrigerated soup gently over medium-low heat until it reaches 165°F, or microwave in 60-second intervals while stirring between each round. Add 2 to 4 tablespoons of chicken broth if it has thickened. Discard the soup if it smells sour, looks separated with discoloration or has been left at room temperature longer than 2 hours.