Onion Soup with Sage Brown Butter, Croutons, and Grated Lemon Peel

A Cozy Evening with Creamy Onion Soup

The aroma alone is enough to transport you – a rich, savory blend of caramelized onions, the subtle earthiness of sage, and the bright zest of lemon. This isn't just soup; it's an experience. Tonight, I'm sharing my recipe for Onion Soup with Sage Brown Butter, Croutons, and Grated Lemon Peel – a dish that's become a comforting staple in my home.

I’ve always been drawn to simple recipes that deliver maximum flavor. This soup perfectly embodies that philosophy. The secret, I've found, lies in the caramelization process. Spending the time to coax the onions into a deep, golden brown unlocks a sweetness and depth of flavor you won't find anywhere else. It’s a labor of love, yes, but the reward is a velvety smooth soup that's unbelievably satisfying.

The brown butter infused with sage adds another layer of complexity. That nutty, fragrant butter perfectly complements the sweetness of the onions and the crispness of the croutons. The addition of grated lemon peel brightens everything up, cutting through the richness with a touch of zesty acidity. It’s the unexpected twist that elevates this soup from ordinary to extraordinary.

This recipe is incredibly versatile. Feel free to experiment with different types of bread for the croutons. A rustic sourdough or a crusty baguette will work beautifully. Similarly, you can substitute other herbs for the sage, depending on your preference. Rosemary or thyme would be delicious choices. The beauty of this soup is its adaptability; it's a blank canvas for your culinary creativity.

I often serve this soup as a starter for a special occasion dinner, but it's also perfect for a cozy night in. Served with a crusty loaf of bread, it's a complete and satisfying meal. It's the kind of soup that warms you from the inside out, a culinary hug on a chilly evening. The creamy texture, the rich flavors, and the satisfying crunch of the croutons all combine to create a truly unforgettable dining experience.

Beyond the delightful taste, there's something inherently comforting about making soup from scratch. It's a connection to simpler times, a reminder of the importance of taking time to nurture yourself and those you love. This isn't just a recipe; it's a tradition, a moment of connection, and a testament to the power of simple ingredients transformed into something truly special.

So gather your ingredients, put on some relaxing music, and let the delicious aroma fill your kitchen. This isn’t just a recipe; it’s an invitation to slow down, savor the moment, and enjoy the simple pleasures of good food and good company. And remember, the best part? The leftovers are just as delicious the next day!

Tips for Success:

• Don't rush the caramelization process. Take your time to slowly cook the onions until they're deeply golden brown. This is where the magic happens.
• Use good quality broth. The flavor of your broth will significantly impact the final taste of the soup.
• Adjust the seasoning to your liking. Taste and adjust the seasoning as you go. Don't be afraid to experiment.
• Make it ahead of time. This soup tastes even better the next day, making it perfect for meal prepping.

Enjoy this delicious and comforting soup!

Step-by-step

• Melt 6 tablespoons butter in heavy extra-large pot over medium-high heat. Add onions; sprinkle with salt and pepper and sauté until onions begin to soften, 15 to 18 minutes.
• Reduce heat to medium and sauté until onions are very tender and deep golden brown, stirring often and adjusting heat as needed, 25 to 30 minutes longer.
• Transfer 1 1/2 cups caramelized onions to small bowl and reserve for garnish.
• Add 8 cups broth to remaining onions in pot and bring to boil. Reduce heat and simmer 25 minutes to blend flavors. Cool slightly.
• Working in batches, puree soup in blender until smooth. Return to same pot and add more broth by 1/4 cupfuls to thin soup to desired consistency. Season soup to taste with salt and pepper.
• DO AHEAD: Can be made 1 day ahead. Cover and chill reserved caramelized onions. Cool soup slightly. Chill soup uncovered until cold, then cover and keep chilled. Rewarm caramelized onions and soup separately before continuing.
• Melt 2 tablespoons butter in medium nonstick skillet over medium heat. Add torn bread pieces and sauté until bread pieces are crisp and golden, 5 to 6 minutes. Remove from heat and reserve.
• Cook remaining 4 tablespoons butter in small saucepan over medium heat until golden brown, stirring occasionally, 3 to 4 minutes. Add sage leaves and cook until slightly crisp, 30 seconds to 1 minute. Transfer leaves to small plate; reserve brown butter in saucepan.
• Stir 1 1/2 tablespoons vinegar into reserved caramelized onions, adding more vinegar by 1/2 teaspoonfuls, if desired.
• Divide warm soup among 8 bowls. Spoon vinegar-seasoned caramelized onions atop soup in each bowl. Sprinkle each serving with croutons and fried sage leaves. Drizzle sage brown butter over each; sprinkle lightly with grated lemon peel and freshly ground black pepper and serve.