Recipes: Steak sandwich with sautéed onions

Preparation:   Preparation time: 30 mins Cooking time: 25 mins Serving: 1 Ingredients:   Rodney's rib rub (makes 2 cups) 1/2 cup kosher salt 1/4 cup msg 1/4 cup freshly ground black pepper 1/4 cup sweet paprika 1/4 cup chile powder 1/4 cup light brown sugar, packed 2 tablespoons garlic...