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Roasted Potato Planks with Rosemary & Lemon

Scott Phillips

Servings: 4

You can substitute sweet potatoes for half of the Idahos in this easy side. Sweet potatoes will cook faster, so cut them a bit thicker (about 1/2 inch), so they’ll roast at the same time.


  • 3 medium Idaho potatoes (about 1-1/4 lb. total)
  • 3 Tbs. olive oil
  • 1-1/2 Tbs. Dijon mustard
  • 1 Tbs. minced fresh rosemary
  • 2 tsp. finely grated lemon zest
  • 2 Tbs. fresh lemon juice
  • 1-1/2 tsp. coarse salt; more to taste
  • 1/4 tsp. finely ground black pepper

Nutritional Information

  • Calories (kcal) : 170
  • Fat Calories (kcal): 90
  • Fat (g): 10
  • Saturated Fat (g): 1
  • Polyunsaturated Fat (g): 1
  • Monounsaturated Fat (g): 8
  • Cholesterol (mg): 0
  • Sodium (mg): 860
  • Carbohydrates (g): 18
  • Fiber (g): 2
  • Protein (g): 2


  • Heat the oven to 450°F. Slice the potatoes on a sharp angle into 3/8-inch slabs. Put them in a colander and rinse (this way you rinse off dirt and lose a little starch for crisper planks). Shake off the excess water and spread them onto a heavy rimmed baking sheet (about 11×18-inches) lined with two layers of paper towels. Cover with a few more paper towels and let dry.
  • In a medium bowl, combine the olive oil, mustard, rosemary, lemon zest, lemon juice, salt, and pepper; stir until well blended. Dump the dried potato planks into the bowl (discard the paper towels); toss with a spatula until each piece is well coated. Scrape the potatoes onto the same baking sheet and spread in a single layer. Drizzle any remaining herb mixture onto the potatoes.
  • Bake the planks until browned on the bottom, about 20 min., and then flip with a spatula. Continue cooking until they’re well browned and tender, about another 15 min. Sprinkle with more salt, if you like, and serve immediately.


Rate or Review

Reviews (2 reviews)

  • Bagni | 02/19/2015

    No problem coating 2 lbs potatoes. Used parchment on baking sheet. Wonderful & easy.

  • 405tulips | 03/19/2012

    This is a fast and simple way to make a very tasty potato side dish.

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