Mustard Free Sheet Pan Tuna Steaks with Tomatoes & Green Beans
Sheet pan dinners are a weeknight lifesaver, and this one delivers serious restaurant-level flavor with almost no cleanup. Thick tuna steaks get rubbed in a warm spice blend of cumin, smoked paprika, and turmeric, then roasted alongside blistered cherry tomatoes and charred green beans until everything is perfectly caramelized. The finishing touch is a bright cilantro-lime dressing — just lime juice, olive oil, garlic, and fresh cilantro — that ties the whole dish together with a punchy, herbaceous kick. For anyone navigating mustard sensitivities, this recipe is a genuinely satisfying find because the bold flavor comes entirely from spices and citrus, with zero mustard in the marinade, dressing, or anywhere else on the pan. So many spice rubs and vinaigrettes sneak in mustard powder or prepared mustard, but this one sidesteps that entirely without sacrificing any depth. It's the kind of meal that looks impressive enough to serve to guests but is honestly straightforward enough to pull off on a Tuesday night.
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Learn more →Ingredients
4 servings
- 1 lb green beans, trimmed
- 2 cups cherry tomatoes
- 3 tbsp extra-virgin olive oil, divided
- ¾ tsp fine sea salt, divided
- ½ tsp black pepper, divided
- ½ tsp ground cumin
- ½ tsp smoked paprika
- ¼ tsp ground turmeric
- 4 tuna steaks (6 oz each, about 1 inch thick)
For the cilantro-lime dressing
- 2 tbsp fresh lime juice (from about 2 limes)
- 1 tbsp extra-virgin olive oil
- 1 small garlic clove, finely grated
- ¼ tsp fine sea salt
- ¼ cup fresh cilantro, roughly chopped
For serving
- lime wedges, for serving (optional)
Instructions
- 1
Position a rack in the upper third of the oven and preheat to 425°F (220°C). Line an 18×13-inch sheet pan with parchment paper or foil.
- 2
Spread the green beans and cherry tomatoes on the prepared sheet pan. Drizzle with 2 tbsp of the olive oil, sprinkle with 1/2 tsp of the salt and 1/4 tsp of the pepper, and toss to coat. Spread into an even layer, leaving a clear space in the center for the tuna.
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