Skinny Greek Mac and Cheese with Crunchy Pita Chip Topping

INGREDIENTS

2 tbsp

extra virgin olive oil, divided

1/2

large red onion, thinly sliced

large green bell pepper, thinly sliced

large red bell pepper, thinly sliced

1 tbsp

minced garlic (about 6 cloves)

1 tbsp

red wine vinegar

1/2 tsp

dried oregano

1 cup

crushed pita chips

1 10 ounce package

frozen spinach, thawed

1/2 cup

sundried tomatoes

2 cups

non-fat milk, divided

1/4 cup

all purpose flour

1 1/2 cups

shredded extra-sharp white Cheddar cheese (about 6 ounces)

1 1/2 cups

low-fat cottage cheese

1/4 tsp

salt

1/4 tsp

freshly ground black pepper

1 cup

crumbled feta cheese (about 4 ounces)

1/4 cup

chopped Kalamata olives, sliced

12 oz

whole-wheat elbow macaroni, or penne

1/4 cup

chopped fresh parsley, for serving