Meanwhile, bring the steak to room temperature. Season with salt and pepper.
Add olive oil to an oven safe pan. (Cast iron would work well for this.)
When the pan is nice and hot add in the steak. Sear for 4 minutes on each side and then place in the oven.
Cook until your desired temperature 5-10 minutes. For medium you want your steak to be an internal temperature of 130 degrees.
Take out of the oven and let the steak rest for 5-10 minutes.
While the steaks are cooking grill the asparagus and mushrooms. I like to toss them in a bit of extra virgin olive oil and salt and pepper. They take about 5-10 minutes on the grill depending on the thickness of asparagus.
To assemble divide spring mix between two bowls.
Top with sliced or diced steak, grilled asparagus, mushrooms and blue cheese crumbles.
Serve immediately with a drizzle of the Balsamic Vinaigrette.
Easy 3 Ingredient Balsamic Vinaigrette
In a small bow combine balsamic vinegar and brown sugar.
In a slow steady stream whisk in the oil until combined and thickened. Set aside until ready to serve with salad. If oil and vinegar separate whisk again right before serving.