Hot Spinach Salad

I recipe was inspired by the wonderful Millennium Restaurant in San Francisco.

1/4 cup olive oil
1/2 thinly sliced red onion
1 package smoked flavored tofu - diced(e.g. http://www.sunrise-soya.com/soy-products/soyganic.php)
3 tablespoons balsamic vinegar
1 teaspoon Dijon mustard (optional).
Salt to taste
Bowl of fresh washed spinach leaves for salad

Heat medium sized pan - add olive oil, and then quickly add onions. Cook onions until translucent. Add tofu and cook until warm. Add vinegar, mustard, and salt. Mix together and toss into spinach.