STEAK WITH GINGER BUTTER SAUCE

Steps:

• Prick the sweet potatoes a few times with a fork. Microwave, turning halfway through, until almost tender, about 8 minutes. Let cool slightly, then cut into bite-size pieces.
• Heat 2 tablespoons vegetable oil in a large nonstick skillet over medium-high heat. Add the shishito peppers and season with salt and pepper. Cook, turning occasionally, until browned and starting to soften, 2 to 4 minutes. Remove to a plate with tongs. Add the sweet potatoes to the skillet; season with salt and pepper. Cook, stirring occasionally, until browned and tender, 6 to 8 minutes. Return the peppers to the skillet to heat through, about 30 seconds.
• Meanwhile, mix the soy sauce, vinegar and 1 tablespoon water in a small bowl. Season the steaks all over with salt and pepper. Heat the remaining 1 tablespoon vegetable oil in a separate large skillet over medium-high heat. Add the steaks; cook until browned, 4 minutes per side for medium rare. Remove to a cutting board.
• Place the empty skillet over medium heat and add 1 tablespoon butter and the ginger. Cook until the ginger sizzles, about 30 seconds. Remove from the heat and add the soy sauce mixture. Whisk in the remaining 3 tablespoons butter, 1 tablespoon at a time, until smooth.
• Slice the steaks and divide among plates, along with the vegetables. Spoon the sauce over the meat. Top with sesame seeds.