Greek Mac and Cheese

Bahan-bahan (6 porsi)

• 2 tablespoons extra-virgin olive oil (divided)
• 1/2 large red onion (thinly sliced)
• 1 large green bell pepper (thinly sliced)
• 1 large red bell pepper (thinly sliced)
• 1 tablespoon minced garlic ((about 6 garlic cloves))
• 1 tablespoon red wine vinegar
• 1/2 teaspoon dried oregano
• 1 cup pita chips (crushed)
• 10 ounces frozen spinach (thawed (1 package))
• 1/2 cup sundried tomatoes
• 2 cups non-fat milk (divided)
• 1/4 cup all purpose flour
• 1 1/2 cups extra-sharp white Cheddar cheese (shredded, about 6 ounces)
• 1 1/2 cups low-fat cottage cheese
• 1/4 teaspoon kosher salt
• 1/4 teaspoon freshly ground black pepper
• 1 cup crumbled feta cheese (about 4 ounces)
• 1/4 cup sliced Kalamata olives (chopped)
• 12 ounces whole-wheat elbow macaroni (or penne)
• 1/4 cup chopped fresh parsley (or fresh dill or thyme for serving)