2 endives, cut horizontally into 1/2" pieces
1 medium apple, cored and cut into 1/2" cubes
1 cup toasted walnuts, rough chopped into large chunks
2 Tablespoons minced shallots
1/4-1/3 teaspoon Kosher Salt
1/8-1/4 teaspoon black pepper
1/2 teaspoon sugar
1 Tablespoon lemon juice
1 Tablespoon red wine vinegar
1.5 Tablespoons olive oil
1 medium firm but ripe avocado cut into 1/2" cubes
1/4 cup Feta cheese