Aunt Kim's Apple Salad

1 head iceberg lettuce, broken into pieces
1 head red leaf lettuce, broken into pieces
2 Granny Smith apples, diced
4 oz. blue cheese, crumbled
1 bag sea salt bagel chips, broken apart

Dressing:
3/4 C. sugar
1 tsp. dry mustard
1 C. oil
1/3 C. apple cider vinegar
1 tsp. salt
1 1/3 poppy seeds

1. Refrigerate dressing overnight.

2. Combine all ingredients just before serving.