Grilled Steak Sandwich

I know you have looked in your refrigerator and wondered what that thing is in the plastic bowl in the back.  The only way you can figure it out is by tasting it and your just not that brave, so off it goes to the garbage can. This sandwich was born because I cleaned out the fridge while I could still identify the ingredients. However I do think that the Food Network should create a new show where contestants have to identify the left over or eat it. For the sandwich feel free to add or subtract ingredients, just use up the meat or vegetables in your refrigerator.

Grilled Steak Sandwich
4 oz leftover steak, cut into bite size pieces
2 oz spinach, raw
2 oz mushrooms, sliced
2 oz roasted red pepper, cut into bite sized pieces
1 ounce onion, diced
6 cherry tomatoes, cut in 1/2
enough Mozzarella to cover the sandwich
Olive oil to brush on baguette
1/2 small baguette, cut in half horizontally so you have 2 long pieces

Preheat a grill to medium heat.
If you have a grill basket you can use that or get a piece of aluminum foil and spray it with a nonstick spray. Toss everything but the spinach, mozzarella and the baguette on the grill in the basket or on the foil. Cook until everything is heated through. While the mixture is heating spread a light coating of the olive oil on the baguette halves and lay them on the grill. When the baguette starts to brown flip it over and brown the other side. To assemble spread the spinach on the bread, top with the meat and vegetable mixture and then add the mozzarella on top and let it sit on the grill until the mozzarella starts to melt.