Quick-Marinated Skirt Steak with Sriracha Potatoes & Spinach
Roasted potatoes are pretty delicious all by themselves. But they're even better when you douse them with spicy mayo and a shower of umami-packed bonito flakes. You've probably seen these pink, feathery-looking shavings of smoked tuna in the ethnic section of the supermarket—and they're well worth taking home for this Asian take on surf and turf.
1 lb small fingerling potatoes, halved lengthwise
5 Tbsp vegetable oil, such as grapeseed, divided
3/4 tsp kosher salt, divided
1/2 tsp freshly ground black pepper, divided
1/4 cup plus 1 tablespoon soy sauce, divided
1/4 cup hot chile paste, such as sambal oelek
1 1/2 lbs skirt steak, cut into four equal-sized pieces
1/4 cup chicken or vegetable broth
1 1/2 lbs spinach, trimmed if needed
3 Tbsp mayonnaise
1 Tbsp Sriracha paste
Bonito flakes, for serving (optional)
- Place a rimmed baking sheet in oven and preheat oven to 450°F.
- In a large bowl, toss potatoes with 1 tablespoon oil, 1/2 teaspoon salt, and 1/4 teaspoon pepper. Spread in a single layer on pre-heated baking sheet, and roast until golden brown and tender, tossing halfway through, about 20 minutes.
- In a medium bowl, whisk together 2 tablespoons oil, 1/4 cup soy sauce, chile paste, and 1/4 teaspoon each salt and pepper. Add steaks, turning to coat them in the marinade, and let stand at room temperature for 5 minutes.
- Meanwhile, heat a large cast-iron skillet over medium-high heat. Add 2 tablespoons oil and let oil heat briefly. Working in batches if necessary, sear steaks until medium rare, 3 to 4 minutes per side. Remove steaks from skillet and transfer to a cutting board or plate to rest, reserving skillet.
- Add broth and remaining 1 tablespoon soy sauce to skillet over medium-high heat, scraping bottom of skillet to deglaze the pan. Add spinach to the skillet and cover; cook until wilted, about 3 minutes.
- In a medium bowl, mix mayonnaise and sriracha. Divide spinach among four plates and top with steak; serve potatoes alongside, drizzled with sriracha mayo and garnished with bonito flakes, if desired.