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4.59 from 12 votes

Buttery Grilled Potatoes in Foil Packets

Enjoy these buttery, perfectly seasoned, and absolutely melt-in-your-mouth grilled potatoes without turning on your oven. The flavors of garlic, onion, and butter explode in your mouth at first bite!
Prep Time20 mins
Cook Time35 mins
Total Time55 mins
Course: Side Dish
Cuisine: American
Keyword: 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 a Russet potato, peel the potatoes.)
  • Slice potatoes into rounds no thicker than ¼ of an inch 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 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