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Sweet Potato and Butternut Gratin

Cooking Light
Sweet Potato and Butternut Gratin
Photo: Becky Luigart-Stayner; Styling: Tiffany Vickers
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Worthy of a Special Occasion

Pancetta is Italian cured pork, similar to cured bacon, which you can substitute, if necessary. Smoked bacon will also work, if you prefer the flavor.

Yield: 8 servings (serving size: about 1/2 cup)

Ingredients

  • 2  tablespoons  butter
  • 1  ounce  pancetta, chopped
  • 1/4  cup  chopped shallots
  • 2  garlic cloves, minced
  • 1.38  ounces  all-purpose flour, divided (about 5 tablespoons)
  • 1  teaspoon  chopped fresh thyme
  • 2  cups  2% reduced-fat milk
  • 3/4  cup  (3 ounces) grated fresh Parmigiano-Reggiano cheese
  • 1/2  teaspoon  salt
  • 1/2  teaspoon  freshly ground black pepper
  • 1/8  teaspoon  ground red pepper
  • 1  pound  baking potato, peeled and cut into 1/8-inch-thick slices
  • 8  ounces  sweet potato, peeled and cut into 1/8-inch-thick slices
  • 8  ounces  butternut squash, peeled and cut into 1/8-inch-thick slices
  • Cooking spray
  • 1/3  cup  (1 1/2 ounces) shredded Gruyère cheese

Preparation

1. Preheat oven to 375°.

2. Melt butter in a small saucepan over medium-high heat. Add pancetta; cook 1 minute. Add shallots and garlic; cook 2 minutes, stirring constantly. Weigh or lightly spoon 1.1 ounces (about 1/4 cup) flour into a dry measuring cup; level with a knife. Add to pan; cook 2 minutes, stirring constantly with a whisk. Stir in thyme. Gradually add milk, stirring constantly with a whisk; cook over medium heat until slightly thick (about 3 minutes), stirring constantly. Stir in Parmigiano-Reggiano; cook 3 minutes or until cheese melts. Stir in salt and peppers. Remove from heat.

3. Cook baking potato in boiling water 4 minutes or until almost tender; remove with a slotted spoon. Cook sweet potato in boiling water 4 minutes or until almost tender; remove with a slotted spoon. Cook butternut squash in boiling water 4 minutes or until almost tender; drain. Sprinkle vegetables evenly with remaining 1 tablespoon flour. Arrange potatoes and squash in alternating layers in a broiler-safe 11 x 7-inch baking dish coated with cooking spray; spoon sauce over potato mixture. Top with Gruyère. Bake at 375° for 40 minutes.

4. Preheat broiler. Broil 3 minutes or until golden. Let stand 10 minutes.

Nutritional Information

Calories:
220
Fat:
8.7g (sat 5.2g,mono 2.2g,poly 0.3g)
Protein:
9.7g
Carbohydrate:
26.2g
Fiber:
2.6g
Cholesterol:
25mg
Iron:
1.3mg
Sodium:
418mg
Calcium:
259mg
Cooking Light, NOVEMBER 2009

Member Ratings and Reviews

5 stars
Sarah from An Unknown Location
Very good. I made some changes - used onion instead of shallots, added sage, and used mozarella instead of gruyere. Next time I would also use more sweet potato and butternut squash in place of the russet potato.02/06/10

5 stars
Lisa
I like cooking but I am no means a cook. Recipes with this many ingredients and this many steps scare me. But, I thought I'd give this one a try. While it was a lot of work, it was totally worth it. You have to peel and cut potatoes and squash (I used a food processor which added to the clean up time but reduced finger cutting). Boil potatoes and squash. Layer them in a dish. Make the sauce - be sure to prep ingredients before as it is a fast process. This dish is amazing. We're talking really really good. The flavors of the pancetta and the tyme are so great. The sauce is perfect. Seriously amazing. This is definitely perfect for a special occasion.01/14/10