Broccoli Grape Pasta Salad

1/2 (16 oz) box of bow tie pasta
1 lb fresh broccoli, cut into small florets
1/2 cup light mayonnaise
1/2 cup non-fat plain yogurt
1/3 cup sugar
1/3 cup red onion, diced
1/3 cup red wine vinegar
1 tsp salt
2 cups seedless red grapes, halved
6 slices of cooked bacon, crumbled
1/4 cup sunflower seeds

Prepare pasta according to package directions. Meanwhile, whisk together the mayonnaise, yogurt, red onion, red wine vinegar and salt. Toss with broccoli, grapes and cooked pasta. Stir to coat. Cover and chill. Top with crumbled bacon and sunflower seeds before serving.

*Adapted from http://www.eat-yourself-skinny.com/2012/10/broccoli-grape-harvest-salad.html