3 baking potatoes (8 to 10 oz each)
1/2 cup chopped onion
1 package Earthbound Farm Frozen Organic Broccoli Florets
2 tablespoons butter
1/2 cup lowfat or nonfat milk
1/2 cup nonfat Greek yogurt
3/4 cup shredded cheddar and jack cheese (or up to 1 cup if desired)
  Salt and freshly ground black pepper