Au Gratin Cauliflower

Ingredients 4 c cauliflower, cut into 1" pieces 1 1/2 c non-fat milk 1/4 tsp salt 1/2 c whole wheat bread crumbs 3/4 c sharp cheddar, shredded 1 tsp extra virgin olive oil 2 TB whole wheat flour 1/4 tsp pepper 1 TB green onions, chopped 1 tsp dijon mustard…