Steak with mushrooms and squash
Description
Preheat the oven to 245 degrees. In a skillet, combine mushrooms, squash, and onion. Add 1 tablespoon of oil and 3/4 teaspoon of salt, then mix well. Arrange the vegetables around the edges of the skillet and place the steak in the center. In a small bowl, mix together mustard seeds and pepper. Brush the steak with the remaining 1 1/2 teaspoons of oil and sprinkle with salt. Spread the mustard-pepper mixture over the steak. Roast, turning once, for 15 to 20 minutes. Transfer the steak to a cutting board, cover loosely with aluminum foil, and let rest. Spread the vegetables into an even layer, return to the oven, and continue roasting until they are browned and tender, for 8 to 10 minutes. Slice the steak into 6-mm thick slices and serve with the vegetables.