Combine ⅓ cup yogurt, 2 tablespoons mayonnaise, 2 tablespoons sun-dried tomato oil, 1 tablespoon vinegar, ½ teaspoon each garlic powder, Italian seasoning and salt and ¼ teaspoon each crushed red pepper and black pepper in a large bowl; stir well.
Add rinsed beans, chopped bell pepper, ½ cup chopped sun-dried tomatoes, chopped scallions and 2 tablespoons basil to the yogurt mixture; stir to combine.
Cover and refrigerate for at least 30 minutes (and up to 1 day). Sprinkle with pine nuts.
