Endive with Apples, Walnuts and Blue Cheese

2 heads Belgian endive, cleaned and torn
1 head curly endive, cleaned and torn
1 cup walnuts, toasted
2 Gala apples, cored and sliced
4 oz. blue cheese, crumbled

Citrus Vinaigrette
1 tsp grated lemon zest
1 tsp grated orange zest
2 Tblsp fresh lemon juice
2 Tblsp fresh orange juice
1 shallot, minced
1 Tblsp Dijon
1 tsp sugar
º cup olive oil
salt & freshly ground black pepper

Combine all of the salad ingredients in a large serving bowl and refrigerate.

Vinaigrette
In a small bowl, combine the fruit zest, fruit juice, shallot, Dijon and sugar. Whisk to combine. Slowly drizzle in the olive oil while whisking. Season to taste with salt and pepper.

Toss the salad with the vinaigrette and serve at once.