Chicken Tikka Masala Soup

Name: Chicken Tikka Masala Soup
Ingredients: 1 pound boneless, skinless chicken thighs, cut into 1/2-inch pieces; 1 tablespoon garam masala; 1 teaspoon ground turmeric; ¼ teaspoon cayenne pepper; 2 tablespoons canola oil or other neutral oil; 1 cup diced white onion; 1 cup chopped yellow bell pepper (1/4-inch); 3 large cloves garlic, grated; 1 tablespoon grated fresh ginger; ½ teaspoon salt; 4 cups lower-sodium chicken broth; 1 (15 ounce) can no-salt-added crushed tomatoes; 1 cup chopped butternut squash or sweet potato (1/4-inch); ¾ cup coconut cream (see Tip); 1 tablespoon packed light brown sugar; 1 tablespoon fresh lime juice; 6 cups baby spinach; Thinly sliced scallions for garnish