How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Grilled Tuna With Onions And Fennel ?

You need 11 ingredients. The key ingredients include: 1/4 cup fruity olive oil, 2 tablespoons lemon juice, 1/4 cup chopped scallions, 1 tablespoon fresh thyme leaves, and more.

Is Grilled Tuna With Onions And Fennel suitable as seafood?

Yes, Grilled Tuna With Onions And Fennel falls under the Seafood category and is a great choice for this type of meal.

How do I store leftover Grilled Tuna With Onions And Fennel ?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Grilled Tuna With Onions And Fennel Recipe

Name: Grilled Tuna With Onions And Fennel
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1/4 cup fruity olive oil; 2 tablespoons lemon juice; 1/4 cup chopped scallions; 1 tablespoon fresh thyme leaves; 2 cloves garlic minced; 1 teaspoon salt; 1 teaspoon fennel seeds crushed; freshly ground black pepper, to taste; 1 1/2 lbs tuna; 1 fennel bulb, trimmed and cut into 2 inch pieces; 1 red onion, cut into 8 wedges

Try this homemade Grilled Tuna With Onions And Fennel recipe the whole family will love. Made with olive oil, lemon juice, scallions and thyme. Easy ste…

This Grilled Tuna With Onions And Fennel relies on simple, everyday ingredients such as fruity olive oil, lemon juice, chopped scallions and fresh thyme leaves. It comes together quickly and makes 4 servings, at about 348 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Seafood

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Feel free to swap in similar ingredients you already have on hand and adjust seasoning to taste.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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Grilled Tuna With Onions And Fennel

Tips for the best results

Variations & substitutions

My Personal Notes

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