We had this Sunday evening and it was fantastic!

Salad:
1 sirloin steak, 1/2" - 3/4" thick (1 lb.)
8 cups torn lettuce (or prepackaged salad mixin's!)
1 cup sliced mushrooms
2 large tomatoes, cut into large chunks
1/4 cup sliced green onions

Dressing:
1/3 cup vinegar
1 envelope parmesan Italian salad dressing mix
1/3 cup olive oil
1 clove garlic, minced

Make the dressing by pouring ingredients into a cruet or medium bowl. Shake cruet vigorously (or whisk ingredients until will blended). Reserve 1/3 cup of dressing and refrigerate the rest.

Pour reserved dressing mix over steak; cover and refrigerate 1 - 2 hours. Drain and discard dressing. Grill 'til done as desired; cut into slices or large dice.

Toss salad ingredients in a large bowl. Pour over the reserved salad dressing. Arrange steak slices over salad, and it serves 4.