Best Florentine Caramelized Onion Soup Recipes

TUSCAN ONION SOUP (CARABACCIA)

Steps:

• Trim ends off onions; halve and peel. Cut onions into thin slices lengthwise along the grain.
• Heat olive oil in a very large skillet over medium-high heat. Add onions and kosher salt. Cook and stir until starting to turn translucent, 5 to 7 minutes. Reduce heat to medium and continue to cook, stirring occasionally, until very soft and sweet, about 1 hour.
• Add sage leaves, pepper, cinnamon, and almonds to the onions. Cook and stir until fragrant, 3 to 5 minutes. Transfer mixture to a soup pot. Pour in red wine vinegar and broth. Bring to a simmer over high heat. Reduce heat to medium-low and simmer until flavors blend, about 30 minutes.
• Preheat the oven to 400 degrees F (200 degrees C). Line a small baking sheet with aluminum foil.
• Place Italian bread on the baking sheet. Drizzle some olive oil over the bread; sprinkle sliced sage and some Parmesan cheese on top.
• Toast in the preheated oven until browned, about 15 minutes.
• Ladle soup into serving bowls and top each with a piece of toast. Drizzle remaining olive oil over the toast and sprinkle remaining Parmesan cheese on top. Dunk toast into the soup and let soak for a few minutes before serving.

CREAMY CARAMELIZED-ONION SOUP

Steps:

• Melt 4 tablespoons butter in a large saucepan over medium heat. Add leeks, garlic, shallots, and half of the onions. Cook, stirring occasionally, until vegetables are very soft and translucent, about 10 minutes. Reduce the heat to medium-low, and cook, stirring occasionally, until vegetables are deep golden brown, about 25 minutes.
• Add vermouth, stock, and 1 teaspoon salt. Bring to a boil. Reduce heat to medium-low. Simmer, stirring occasionally, 15 minutes. Let cool. Puree onion mixture in batches in a blender until smooth, about 3 minutes per batch. Set aside.
• Meanwhile, melt remaining 2 tablespoons butter in a medium skillet over medium-low heat. Add remaining onion. Cook, stirring occasionally, until onion is very soft and golden brown, about 45 minutes. Cover, and set aside.
• Return onion puree to saucepan. Stir in cream. Reheat over medium heat, stirring, until heated through but not boiling. Season with salt, if desired. Serve, topped with caramelized onions.

CARAMELIZED ONION AND LENTIL SOUP

Steps:

• In a medium saucepan, heat oil over medium-high. Add onion and cook, stirring occasionally, until soft and edges are browned, about 15 minutes. Add lentils and broth and season with salt and pepper. Bring to a boil; reduce to a medium simmer and cook, gradually smashing some lentils against the side of pan with a spoon to thicken soup, 10 minutes. Serve topped with a dollop of yogurt and herbs.