Sweet Cole Slaw

1  (16 oz)  bag   coleslaw mix
2  Tbs  diced onion
2/3  cup  Miracle Whip (not mayonnaise)
2  Tbs  vegetable oil
1/3  cup  sugar
1  Tbs  white vinegar
1/4  tsp  salt
1/2  tsp  poppy seeds

Combine the coleslaw mix and onion in a large bowl.

Whisk together the salad dressing, vegetable oil, sugar, vinegar, salt, and poppy seeds in a medium bowl; blend thoroughly. Pour dressing mixture over coleslaw mix and toss to coat. 
Chill at least 2 hours before serving.