Caribbean Sweet Potato Gratin (WF, GF, DF)

Ingredients

• 2 garlic cloves, minced and pressed
• 2½ teaspoon lime rind, freshly grated
• 4 tablespoons fresh lime juice
• 4 tablespoons fresh coriander, chopped
• ½ teaspoon dried thyme
• 1½ teaspoons salt
• ½ teaspoon pepper
• 2½ cups coconut milk
• 4 cups sweet potato, peeled and sliced
• 1 cup cooked rice
• 1½ cups cooked black beans
• 1½ cups fresh spinach rinsed, stemmed and finely chopped in ribbons
• ¾ cup cornmeal
• 1 tablespoon vegetable oil
• ½ teaspoon dried cumin
• ½ teaspoon salt