Tangy Pear and Blue Cheese Salad

INGREDIENTS
1/3 cup ketchup
1/2 cup distilled white vinegar
3/4 cup white sugar
2 teaspoons salt
1 cup canola oil
2 heads romaine lettuce, chopped
4 ounces crumbled blue cheese
2 pears - peeled, cored and chopped
1/2 cup toasted chopped walnuts
1/2 red onion, chopped


DIRECTIONS
In a small bowl, mix ketchup, vinegar, sugar, and salt. Gradually pour in oil, stirring constantly, until well blended.
In a large serving bowl, toss together lettuce, blue cheese, pears, walnuts, and red onion. Pour dressing over salad, and toss well to coat.