1. Combine first 4 ingredients in a small bowl; stir with a whisk. Stir in tarragon and next 5 ingredients (through 1/8 teaspoon pepper).
2. Combine apples and endives. Add 1/4 cup dressing; toss gently. Add remaining dressing, if needed, to coat apple mixture. Sprinkle with 1/4 teaspoon salt and 1/4 teaspoon pepper. Arrange 3/4 cup salad mixture on each of 8 salad plates. Top with almonds and parsley.