Step 1

Preheat the oven to 400 F.

Step 2

In a large shallow dish, combine olive oil, balsamic vinegar, and steak spice. With a pastry brush, generously brush the marinade on the tops and bottoms of each mushroom.

Step 3

Place mushrooms in the remaining marinade, top side down and bake, uncovered, for 20 minutes. Remove from oven, flip, and bake another 5-10 minutes until mushrooms are cooked all the way through.  Serve with roasted potatoes and grilled vegetables.

Step 4

Optional - Once mushrooms are finished baking, heat a cast iron griddle over medium-high heat. Place mushrooms, top side down on hot skillet, and brown for 2-3 minutes until steaks are slightly charred.