Chicken, Spinach, and Tortellini Soup

Ingredients (15)

• + 1 tablespoon butter add to pantry
• + 1 medium onion, chopped add to pantry
• ✓ ½ teaspoon salt
• ✓ 3 cloves garlic, finely minced
• + 3 cups frozen chopped spinach add to pantry
• + 5 cups chicken stock add to pantry
• + 2 ½ cups chopped cooked chicken add to pantry
• + 1 (15 ounce) can crushed tomatoes add to pantry
• + 1 cup water add to pantry
• + 2 bay leaves add to pantry
• + 1 teaspoon dried oregano add to pantry
• ✓ 1 teaspoon dried parsley
• + 1 teaspoon red pepper flakes, or to taste add to pantry
• + salt and ground black pepper to taste add to pantry
• + 1 (12 ounce) package refrigerated cheese tortellini add to pantry