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A foil packed filled with buttery grilled potatoes sits on a white backdrop.
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4.65 from 14 votes

30 Minute Buttery Grilled Potatoes in Foil

Grilled in foil packets is my favorite way to cook potatoes! The thinly sliced potatoes — Yukon gold or russet potatoes work well — emerge from the foil packet extra buttery and perfectly seasoned after just 30 minutes on the grill.These sliced potatoes are the perfect summer side dish!
Prep Time10 mins
Cook Time30 mins
Total Time40 mins
Course: Side Dish
Cuisine: American
Keyword: Buttery Grilled Potatoes, Grilling, Potato, Side Dish
Servings: 9 servings
Calories: 266kcal


  • Grill
  • Grilling Spatulas
  • Aluminum Foil


  • 3 pounds Yukon gold potatoes
  • ½ cup butter
  • 1 tablespoon kosher salt
  • Freshly cracked black pepper
  • 2 tablespoon minced garlic
  • ½ cup diced white onion
  • ¼ cup olive oil


  • Scrub the potatoes well to be sure the skin is clean. (If using Russets, peel the potatoes.)
  • Slice potatoes into rounds about ¼ of an inch thick and set aside.
  • Using a cold stick of butter, create a thin layer of butter in the center of two 18x12 inch pieces of foil. The tracings of butter should measure approximately 12x9 inches.
  • Place half of the sliced potatoes in a thin, even layer on top of one of the butter rectangles. Season with half of the salt and a generous sprinkling of freshly cracked black pepper. Top with 1 tablespoon of garlic and ¼ cup of the onion. Place 4 – 6 pats of butter on top of this first layer of butter.
  • Repeat the process of layering and seasoning with the remaining potatoes directly on top of the first layer. Drizzle the entire dish with olive oil.
  • Top with the second piece of foil and fold all the edges in toward the center twice to create a sealed packet.
  • Grill over medium-high heat for 15 – 20 minutes on the first side before flipping and grilling for another 10 – 15 minutes. (Longer for crispier potatoes.) The packet will puff up during the cooking process – this is ok!
  • Remove potatoes from grill and allow foil to cool a few minutes before opening packet. Sprinkle with fresh parsley or chives before serving, if desired.



  • Leftover potatoes can be stored in the fridge for up to five days. (And make a really great breakfast!)


Serving: 0.3pounds | Calories: 266kcal | Carbohydrates: 28g | Protein: 3g | Fat: 16g | Saturated Fat: 7g | Cholesterol: 27mg | Sodium: 875mg | Potassium: 657mg | Fiber: 4g | Sugar: 2g | Vitamin A: 315IU | Vitamin C: 31mg | Calcium: 26mg | Iron: 1mg