Sheet Pan Spicy Tuna and Vegetable Bake
A savory and spicy sheet pan dish combining fresh tuna steaks with colorful vegetables, roasted to perfection with a zesty chili-garlic sauce. This seafood-inspired sheet pan (gluten free) ready in about 30 minutes pairs fresh tuna steaks, small, cut into thin wedges red onion, olive oil 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 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.
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
Instructions
- 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.
- 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.
- 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.
- 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.
- 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.
Equipment for this recipe
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Frequently asked questions
How long does Sheet Pan Spicy Tuna and Vegetable Bake take to make?
Total time is about 30 minutes (15 min prep + 15 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.
How do I store leftover Sheet Pan Spicy Tuna and Vegetable Bake?
Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep fresh tuna steaks from drying out.
Can I substitute ingredients in Sheet Pan Spicy Tuna and Vegetable Bake?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Sheet Pan Spicy Tuna and Vegetable Bake for a different number of people?
The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
Is Sheet Pan Spicy Tuna and Vegetable Bake gluten free?
Yes — this recipe is tagged gluten free based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.
