Instructions

  1. Preheat oven to 400°F.
  2. Melt butter in a large skillet, add onions and potatoes and toss to coat.
  3. Cook over medium heat, turning occasionally until vegetables are golden brown.
  4. Season with salt and pepper, add sage and 1/2 the vinegar and mix.
  5. Place in an ovenproof dish, cover and bake 20 minutes.
  6. Add remaining vinegar, bake uncovered 20-30 minutes or until potatoes are tender.