potato and rutabaga gratin

Awhile back I bought myself a mandoline so that I could slice vegetables razor thin and do cool stuff with them but the kitchen tool had gone unused until I busted it out at Thanksgiving to make a gratin.

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In addition to using to using the mandoline for the first time this was also the first time I’d ever done anything with rutabaga.  I love working with foods that are new to me!  Rutabagas are in the turnip family and paired beautifully with potatoes in this gratin.  In addition to the two root vegetables there was also garlic, red onion, fresh thyme, and of course the gratin staples of heavy cream, milk, and cheese– in this case Gruyère.  Several people remarked that it was their favorite dish of the day and one of those people may have been me.

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This weekend I plan to do a little Christmas cookie baking so stay tuned next week for ideas for your own holiday baking!

Potato and Rutabaga Gratin (recipe found at www.saveur.com)

  • 4 tbsp. unsalted butter
  • 2 tbsp. olive oil
  • 4 cloves garlic, finely chopped
  • 1 medium red onion, thinly sliced
  • ¼ cup flour
  • 2 cups milk
  • 1 cup heavy cream
  • 1 lb. russet potatoes, peeled and very thinly sliced
  • 1 lb. rutabagas, peeled and very thinly sliced
  • 1 tbsp. minced thyme leaves
  • 2 cups (about 4 oz.) grated Gruyére cheese
  • Kosher salt and freshly ground black pepper, to taste

Heat oven to 425°. Heat butter and oil in a 6-qt. saucepan over medium-high heat; add garlic and onion, and cook, stirring often, until soft, about 6 minutes. Stir in flour, and cook until smooth, about 1 minute. Add milk and cream, and stir until smooth. Add potatoes, rutabagas, and 2 tsp. thyme, and bring mixture to a boil; cook, stirring often, until vegetables are slightly tender and broken apart, about 5 minutes. Stir in half the cheese and salt and pepper, and then transfer to a 9″ × 13″ baking dish; top with remaining cheese and bake until golden brown and bubbling, about 25 minutes. Sprinkle with remaining thyme before serving.

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