Ingredients

The following ingredients have 4 Servings
  • 1 tablespoon olive oil
  • 3 yellow onions (, large, sliced)
  • 1/4 teaspoon salt
  • 1 tablespoon balsamic vinegar
  • 1 tablespoon olive oil
  • 10 oz mushrooms (, sliced (I used button mushrooms))
  • 6 oz spinach
  • 1 cup half-and-half
  • 1 cup Parmesan cheese (, shredded)
  • 1/4 teaspoon salt
  • 8 oz farfalle pasta

Instruction