The Most Flavorful Tuna Nicoise

By AislePrompt Editorial · Published 2026-03-29 · Updated 2026-03-29

How this recipe was made — this recipe was drafted by AislePrompt's AI-assisted pipeline from technique templates and USDA-sourced nutrition data, and published by AislePrompt Editorial — see how AislePrompt recipes are drafted and published.

A refreshing French salad with grilled tuna, green beans, potatoes, and a garlic-herb vinaigrette. This French-inspired seafood recipe, ready in about 70 minutes, pairs tuna steaks, red potatoes, green beans for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 400 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 30 min Cook: 40 min Serves 4 French cuisine 400 cal/serving

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Ingredients

4 tuna steaks
1 lb, cut into 1/2-inch cubes red potatoes
1 lb, trimmed green beans
2 tbsp olive oil
3 garlic cloves
1 tbsp Dijon mustard
1 tbsp red wine vinegar
1 tbsp, chopped fresh thyme

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Instructions

Step 1: Preheat grill to medium-high. Season 4 tuna steaks with salt and pepper. Grill for 3-4 minutes per side until seared and flaky.
Step 2: Toss 1 lb red potatoes with 2 tbsp olive oil and 1 tsp thyme. Roast at 400°F (200°C) for 25 minutes, stirring halfway.
Step 3: Sauté 3 minced garlic cloves in 2 tbsp olive oil until fragrant. Whisk in 1 tbsp Dijon mustard and 1 tbsp red wine vinegar. Toss with 1 lb green beans and serve alongside the tuna and potatoes.