Sweet and Spicy Sweet Potato Soup

Ingredients (10)

• + 3 tablespoons olive oil add to pantry
• + 4 shallots, sliced add to pantry
• + 1 pound tart apples, cored and cut into 1/4-inch pieces add to pantry
• + 2 tablespoons grated fresh ginger add to pantry
• ✓ 1 lime, zested and juiced
• ✓ ¼ teaspoon red pepper flakes, or more to taste
• + ¼ teaspoon ground cayenne pepper, or more to taste add to pantry
• + 2 quarts chicken broth add to pantry
• + 2 (15 ounce) cans sweet potatoes, drained add to pantry
• + ½ teaspoon salt, or to taste add to pantry