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    Home » Side Dishes » Grilled Potatoes in Foil Packets

    Published: September 8, 2020 · Last Modified: September 2, 2021 · posted by Amanda Gajdosik · This post may contain affiliate links · This blog generates income via ads 1 Comment

    Grilled Potatoes in Foil Packets

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    Buttery, perfectly seasoned, and absolutely melt-in-your-mouth these grilled potatoes in foil packets are the end-all be-all of grilled side dishes! The flavors of garlic, onion, and butter explode in your mouth at first bite!

    A foil packet filled with grilled potatoes sits on a white and grey speckled backdrop. The potatoes are sprinkled with garlic, onion, and parsley.

    I have been eating these potatoes for over half of my life. That’s how good they are! As with any potato recipe – these bad boys are versatile and customizable. Oh, and, as a bonus, you don’t have to heat up the oven to enjoy these perfectly cooked potatoes!

    A family favorite - grilled potatoes in foil packets

    My dad started grilling potatoes in foil when I was a teenager. I would watch him painstakingly slice the taters and layer them with salt, butter, and garlic. I would also watch him burn about half of the batches (sorry to call you out, Dad!). Sometimes the potatoes were perfect. Sometimes the potatoes were more like charcoal. When they were good, they were great. And when they were burnt, they were still good…because potatoes.

    A hand holds a thinly sliced Yukon gold potato up close to the camera. In the background is a cutting board and a strainer filled with more potatoes.

    As I grew up and got a grill of my own, I started experimenting with the method and ingredients until I devised a recipe that is my absolute favorite! This technique makes enough potatoes to feed your whole family, produces potatoes that are so silky and buttery they practically melt-in-your mouth, and reduces the risk of burning or scorching the potatoes. Here’s what you’ll need for perfect grilled potatoes:

    • Potatoes (my preference is always Yukon Gold or Baby Reds, but a regular Russet will work too!)
    • Foil (heavy duty is great if you have it)
    • Butter
    • Olive Oil
    • Salt and Pepper (must haves for every potato recipe)
    • Minced Garlic
    • Diced Onion
    An overhead shot of a large foil packet filled with sliced potatoes that were grilled with garlic and onions.

    Assembling foil packets of potatoes

    1. Slice the potatoes thin. Less than ¼ of an inch. A sharp knife will help with this. Also, if you’re struggling cutting the potatoes whole, slice them in half and place the cut side down to have a flat surface. Slice the halves into thin crescent moon shapes.
    2. Butter the foil. Two large pieces of it. This will help prevent sticking! Use cold butter and just push the stick across the foil to create a thin square of butter. It’s very similar to buttering a cake pan before filling with batter!
    3. Create the first layer. I do this by creating consecutive layers of potato slices inside the buttered box. Taking the extra time to evenly distribute the potatoes will help them cook evenly all the way around.
    4. Season the potatoes. Generously salt and pepper the potatoes. Add minced garlic and diced onion.
    • Slice the potatoes thin.
    • Butter the foil.
    • Make the first layer of potatoes.
    • Season the first layer.
    1. Top with butter. Just a few pats. No need to go crazy.
    2. Create the second layer. Right on top of the first layer. Nice and even again. Season with salt, pepper, garlic, and onion just as you did the first layer.
    3. Finish with olive oil. The key! The secret ingredient! A generous drizzle of olive oil not only adds moisture and flavor but helps to prevent the butter from burning on the grill. And thus! Protects the potatoes from burning too. Huzzah!
    4. Seal it up. Cover the potatoes in the second piece of buttered foil and fold the edges up toward the center of the package to seal everything in.
    5. Grill the potatoes! With the seams of the folded foil facing up. Cook the potatoes for 15 – 20 minutes over high heat on one side and then another 10 – 15 on the other. The packet will puff up and some oil and butter may leak out when the packet is flipped but that’s ok!
    • Add garlic, onion, and butter.
    • Repeat the process on the second layer, finishing with a drizzle of olive oil.
    • Seal the foil packet.
    • Grill the potatoes in foil!

    To serve the potatoes

    After removing the potatoes from the grill I let them sit for a few minutes until the foil is cool enough to handle. Then I unwrap the foil to reveal buttery, beautiful potatoes. The scent is unreal. Just thinking about the butter, garlic, and onion is making my mouth water! Sprinkle with fresh parsley or chives. For a kick of heat sprinkle with red pepper flakes instead!

    A foil packet filled with grilled potatoes sits on a white and grey speckled backdrop. The potatoes are sprinkled with garlic, onion, and parsley.

    Recipe tips and substitutions:

    • For two to three pounds of potatoes I start with a piece of foil that is about 18 inches long and 12 inches wide. From there: make the butter square 12 inches long and 9 inches wide so there is enough of an edge to allow for proper folding.
    • I fold each side of the packet up onto itself twice. First, the top edge folded in towards the center once, and then again. Followed by the bottom edge folded twice toward the center. Then each side gets folded in toward the center twice.
    • When grilling the potatoes, place the foil packet with the folded seams facing up first, this will help keep all the butter and oil inside the packet during the longest part of cooking. (Just be careful when flipping the packet as some oil or butter may leak out and cause a flare up.)
    • For crispier potatoes, cook them upwards of 20 minutes on the first side and 15 on the second. For really crispy potatoes, cook them 30 minutes on the first side and 20 – 25 on the second.
    • Add in some diced bell pepper to the packet before cooking for even more veggie goodness!
    • To easily move, maneuver, and remove the foil packet from the grill I use two large grilling spatulas so the entirety of the packet is supported. A cookie tray is great for transporting the potatoes to and from the grill.
    A white plate filled with buttery sliced Yukon gold potatoes that were grilled in foil packets. The place is on a white and grey speckled backdrop.

    Here’s to grilling season!

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    4.5 from 10 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
    Author: Amanda Gajdosik

    Equipment

    • Grill
    • Grilling Spatulas
    • Aluminum Foil

    Ingredients

    • 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

    Instructions

    • 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.

    Notes

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

    Nutrition

    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
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    Amanda, a food photographer and recipe developer, leans against a kitchen counter. She is smiling and holding a camera. She wears a white shirt and black jeans.

    Hi! I'm Amanda, and I believe in good food for good people. I hope you enjoy the homemade recipes you'll find on my site.

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