Margaret's Pistachio Nut and Olive Tapenade

Ingredients

• 1/4 cup chopped pistachio nuts
• 1/2 cup chopped olives
• 1/2 cup roasted red peppers
• 1/2 medium Granny Smith apple, cored and finely diced
• 2 tablespoons finely chopped parsley
• 1/4 cup finely chopped onion
• 1 tablespoon extra virgin olive oil
• 1 tablespoon balsamic vinegar
• 2 tablespoons roasted garlic, optional
• freshly ground pepper, to taste