How to make it

  • Spray an ovenproof casserole with cooking spray.
  • Preheat oven to 350º F.
  • In a small saucepan, heat the milk and maple syrup to a simmer. Immediately remove from heat, add the chiles and chopped garlic, and allow to steep for 30 minutes.
  • Purée mixture in a blender.
  • Peel and thinly slice the sweet potatoes. Lay one-third of the sliced potatoes in an overlapping pattern in the bottom of the casserole. Season with salt and pepper.
  • Ladle one-third of the milk and syrup mixture over the layer of potatoes.
  • Sprinkle with one-third of the leeks and one-third of the chestnuts.
  • Top with one-third of the cheese.
  • Repeat layering process two more times.
  • Cover with foil and bake for 40 minutes. Uncover and continue baking until the gratin is brown and bubbly, about 20 minutes.
  • Let stand for 20 minutes. Sprinkle with snipped chives.
  • Serve either in squares or simply scooped out of the casserole dish.

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  • mapcenter 13 years ago
    This sounds sooooo good. I am wondering what type of nut could be used in place of the chestnuts since we only seem to see those around Christmas.
    Was this review helpful? Yes Flag
    " It was excellent "
    victoriaregina ate it and said...
    Definately saved and 5 forks.
    Sweet potatoes are so healthy and I am always looking for new ways to make them. Thanks for the poat.

    Was this review helpful? Yes Flag

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