Name: Grilled Tuna Skewers with Vegetables
Prep time: 10 min
Cook time: 10 min
Total time: 20 min
Ingredients: 4 tuna steaks; 2 red onions; 12 cherry tomatoes; 1 red bell pepper; 1 yellow bell pepper; 1 zucchini; For the Marinade; 1 Tbsp chopped oregano; 4 Tbsps olive oil; Freshly ground black pepper; Lime slices for serving

Grilled Tuna Skewers with Vegetables

4 Mar 2026

by Dinna

Prep Time

10 minutes

Cook Time

10 minutes

Total Time

20 minutes

Background

This grilled tuna skewer recipe is simple yet full of flavour - ideal for evenings when you want something fresh, nourishing, and effortless. Fresh tuna and colourful vegetables are threaded onto the same skewers, so there’s no need to prepare a separate side dish — everything cooks together in one simple, satisfying bite.
This is a light, high-protein, low-carb meal that works beautifully as a healthy weeknight dinner or as the centrepiece of a relaxed barbecue. The tuna sears gently on the outside while staying tender and juicy inside, and the vegetables soften just enough to bring out their natural sweetness. A drizzle of oregano-infused olive oil and a squeeze of fresh lime are all you need to make the flavours shine.

Ingredients

4 tuna steaks
2 red onions
12 cherry tomatoes
1 red bell pepper
1 yellow bell pepper
1 zucchini
For the Marinade
1 Tbsp chopped oregano
4 Tbsps olive oil
Freshly ground black pepper
Lime slices for serving

Instructions

Cut the tuna steaks into roughly 1-inch (2–3 cm) cubes.
Peel the red onions and cut them lengthwise into six wedges.
Seed the bell peppers and cut them into pieces similar in size to the tuna.
Slice the zucchini into thick rounds or half-moons.
In a small bowl, mix the olive oil, chopped oregano, and freshly ground black pepper.
Thread the tuna and vegetables alternately onto skewers, making about 8 skewers in total. Brush them generously on all sides with the oregano oil.
Grill over medium-high heat for 10–15 minutes, turning several times and brushing with additional marinade as they cook. The tuna should be lightly seared on the outside while remaining moist inside.
Serve immediately with fresh lime slices on the side.

https://cooktogether.com/recipe-items/grilled-tuna-skewers-with-vegetables/

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