8 cups baby spinach leaves, rinsed and dried
1 cup pecan halves or pieces (toasted or roastsed, if desired)
4 ripe peaches, sliced
3 tbsp rice vinegar
2 tbsp honey
1/2 tsp salt
1/2 tsp ground dry mustard
1 tsp grated sweet or mild onion
1/4 cup canola oil
3 tbsp plain yogurt or fat-free sour cream
1 1/2 tsp poppy seeds