Roasted Onions, Potatoes and Spinach

Ingredients

• onions

  halved and peeled
  2 large
• red potatoes

  scrubbed
  1 1/2 lbs
• garlic

  peeled and partially crushed
  2 cloves
• Tbs. balsamic vinegar
  1 unit
• Tbs. olive oil
  3 unit
• bay leaf
  1 unit
• chopped fresh rosemary
  1 tsp
• Tbs. low-sodium vegetable broth or water
  2 unit
• spinach (5 oz.)

  rinsed and chopped
  4 cups