Sheet Pan Spicy Tuna and Vegetable Bake

By AislePrompt Editorial · Published 2026-06-29 · Updated 2026-06-29

A savory and spicy sheet pan dish combining fresh tuna steaks with colorful vegetables, roasted to perfection with a zesty chili-garlic sauce. This sheet-pan recipe (gluten free), ready in about 30 minutes, pairs fresh tuna steaks, red bell pepper, zucchini for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 350 calories and feeds 2, so it slots cleanly into a weekly meal plan and pairs well with rice, quinoa, or a quick salad. 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.

Ingredients

• 12 oz fresh tuna steaks
• 1 medium, sliced into 1/2-inch strips red bell pepper
• 1 medium, sliced into 1/4-inch rounds zucchini
• 1 small, cut into thin wedges red onion
• 3 tbsp olive oil
• 2 tbsp soy sauce
• 1 tbsp honey
• 3 cloves minced garlic
• 1 tsp red chili flakes
• 1 tbsp fresh lime juice
• 1 tsp salt
• 1/2 tsp black pepper

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Instructions

1. Step 1: Preheat oven to 425°F. In a small bowl, whisk together 3 tbsp olive oil, 2 tbsp soy sauce, 1 tbsp honey, 3 cloves minced garlic, 1 tsp red chili flakes, 1 tbsp fresh lime juice, 1 tsp salt, and 1/2 tsp black pepper until well combined.
2. Step 2: Place 12 oz fresh tuna steaks in a large bowl and pour half of the marinade over them, tossing gently to coat. Let marinate for 10 minutes while preparing vegetables.
3. Step 3: On a large sheet pan, arrange 1 sliced red bell pepper, 1 sliced zucchini, and 1 small cut red onion. Drizzle with remaining marinade and toss to coat evenly.
4. Step 4: Place the marinated tuna steaks on top of the vegetables and roast in the preheated oven for 12-15 minutes, or until the tuna is cooked through but still moist and the vegetables are tender and slightly caramelized.
5. Step 5: Remove from oven and let rest for 3 minutes before serving. Serve tuna alongside the roasted vegetables, spooning any pan juices over the top for added flavor.