Tomato-Fennel Herb Soup with Crispy Parmesan Chips

In the Mediterranean tradition, flavors balance mellow and bold. Aromatic basil and fennel both carry hints of anise (licorice) and pair beautifully with sweet San Marzano tomatoes.

Tomato Fennel Soup with parmesan crisp in mid-century bowls
Hearty and satisfying, yet low in calories and high in fiber

Soup making is about using high-quality ingredients and following the right method to achieve perfect flavor.

Use the freshest ingredients!

Fennel: At its best from autumn through spring, but available year-round.
Tomatoes: In winter, canned Italian San Marzano tomatoes are an excellent choice. When available, use ripe plum tomatoes from the farm.
San Marzano tomatoes have thick flesh, fewer seeds, and a stronger, sweeter, less acidic flavor — a sturdy variety from the Valle del Sarno.
Basil: Organic basil bunches are widely available; in summer they are particularly abundant.

I enjoy this soup with chunky texture, though it also blends smoothly to add a creamy note.

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Basil is not just a garnish here – it’s part of the soup’s essence. Learn to chiffonade it – cut into fine strips.

Got the ingredients? Let’s explore the method.

Different cooking methods bring out different qualities in food. Begin by sautéing the vegetables — fennel, onions, and garlic — until they are just beginning to turn golden. This softens them and encourages gentle caramelization, which adds depth and sweetness.

Remove the softened vegetables from the pan so you can cook the drained tomatoes over high heat. This step concentrates the tomatoes and develops a roasted, caramelized flavor. Add back the tomato juices and vegetable stock, cover, and simmer. Cook covered for about 25 minutes to meld the flavors.

Garnish this delicious tomato and fennel soup with parmesan crisps (frico)
For an umami-packed garnish, add parmesan crisps for crunch and flavor

A sophisticated soup that’s actually easy to prepare.

Ingredients for Tomato fennel Soup on a vintage wood board
Ingredients for the soup, plus vegetable broth
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Sautéing fennel, onions and garlic with fresh herbs
Peeled San Marzano plum tomatoes draining their juices
Peeled San Marzano plum tomatoes draining their juices
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After cooking the tomatoes, the fennel mixture is stirred back in
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A wonderful soup to enjoy — close your eyes and imagine the Mediterranean coast

New to fennel? A few useful facts

Fresh fennel is available year-round but thrives in cool weather, making autumn through spring its peak season. Cooked fennel softens into a silky texture; raw, it can be very enjoyable when thinly sliced in salads. All parts of the plant — bulb, stalks, and fronds — are edible. The bulb and stalks can be eaten raw or cooked, while the fronds make a fragrant, edible garnish. Fennel is crunchy, slightly sweet, and a refreshing element in Mediterranean dishes.

Fennel and anise are both native to the Mediterranean and belong to the same botanical family. Anise is typically grown as an annual for its seeds, while fennel is a perennial that offers edible bulb and foliage as well as seeds. The characteristic licorice flavor comes from anethole, an essential oil found in their seeds.

Fennel is versatile: the bulb can be braised, grilled, fried, or stewed, and it is excellent raw when thinly sliced and paired with the feathery fronds.

Nutrition and health benefits
Fennel is nutritious and linked to various health benefits. The bulb provides energy, dietary fiber, potassium, calcium, phosphorus, and small amounts of iron, magnesium, zinc, niacin, and vitamin K. It also contains B vitamins, vitamin A, beta-carotene, and flavonols. Fennel seeds are traditionally used to ease digestion, and fennel essential oils may have anti-inflammatory properties. Herbal teas that include fennel can help relieve colic and digestive discomfort.

I enjoy vintage accessories, and the burled bread board pictured here was purchased from a shop specializing in mid-century finds.

Enjoy this soup and the bright Mediterranean flavors it brings.

Enjoy this wonderful soup,
Karen