Grilled Parmesan Sweet Potatoes is a surprisingly huge hit in our family, but I wish it looked as good as it tasted. This is one of those recipes that is “to-die-for delicious” but just isn’t as pretty as it should be. Don’t let that stop you from making it.

Let’s get started on this super quick and rewarding recipe!
🍲 Meal Preparation
For the parmesan mixture, add the butter, parmesan, garlic, italian seasoning, salt and pepper in a small bowl. Give it a quick stir.
Tip: I sprayed the cast iron skillet with vegetable oil spray, but later realized that the melted butter in the parmesan mix would have been sufficient by itself.
🔥 Grilling Instructions
Step One: Fire up the grill to a direct heat at 350 degrees. While that is heating up, slice two large sweet potatoes in 3/16 inch slices.
I used our food slicer to cut the potatoes in a uniform thickness. That makes the grilling time more consistent.
Step Two: Layer the sweet potato slices in a cast iron skillet. I added three to four layers thick.
Step Three: Pour the parmesan mix over the sweet potatoes in the cast iron skillet.
⏲️ Grilling Time
It only took 20 minutes for the sweet potatoes to be fully cooked. A nice caramelized crust formed where the potatoes and the cast iron touched – Oh my! Was that just the best part of the dish!
The time varies depending on how thick the slices of sweet potato were cut. The thinner the slice, the quicker it will cook. Flexible recipes like this make cooking so much easier, especially when you learn How Many Potatoes in a Pound, when needed.
Be careful removing the cast iron skillet from the grill. It is extremely hot! After this recipe, I decided to research and wrote about the best grilling gloves I could find. Hopefully, I can avoid finding out exactly how hot cast iron will get again!
Easy! Quick! Delicious! My perfect grilled sweet potato recipe!
Other Grilled Potato Dishes
Twice Baked Brisket Potatoes – I had some leftover brisket and wanted to make a meal out of these twice baked potatoes. They were so filling and delish with the smoky flavor!
Foil Pack Sweet Potato – You can’t get any easier than this! Wrapping the sweet potato in foil with a little bit of prep and grilling it until it is baked through.
Mouthwatering Grilled Potato Skins – Yowza! These turned so crispy and we made ours “fully loaded” with sour cream, butter, bacon and all the fixings! I can’t say enough good things about the amazing texture and flavor!
Grilled Parmesan Sweet Potatoes
Ingredients
- 2 Sweet Potatoes I used my meat slicer to make the job VERY easy!
- 3 tbsp Butter melted
- 1/2 cup Parmesan Cheese grated
- 1 tbsp Garlic minced
- 1 tbsp Italian Seasoning
- 1 tsp Salt
- 1/2 tsp Pepper
Instructions
Mix the Ingredients
- Add all ingredients except the sweet potatoes to a small bowl and mix thoroughly
- Set aside
Slice the Sweet Potatoes
- To get evenly sliced potatoes, use a food slicer. I set mine to 3/16" and had very consistent and thin slices of sweet potatoes. If you don't have one, just slice them with a sharp kitchen knife
Prepare the Cast Iron Skillet
- Layer the sweet potatoes in a cast iron skillet. Only 2-3 potatoes slices deep.
- Sprinkle the mixture over the potatoes.
Grill
- Set the grill for 350 degrees on direct heat and grill for approximately 20 minutes or until the potatoes on top are softened.
Notes
Nutrition
Jason’s been firing up the grill for over 30 years after graduating from the US Coast Guard Academy. His love of finely-grilled steak and chicken led him to buy his first Weber grill to put on his apartment patio in 1992. Each military move led to a new grill (a mixture of gas and charcoal) until he fell in love with the Big Green Egg in 2008. Since then, he has added another 4 grills to the collection. Yes, he has a problem. Jason loves smoking in the ceramic BGE with exotic woods including olive wood from Egypt and hard to find varieties such as sassafras and orange wood. Jason takes the term “foodie” to a whole new level, jumping at the chance to take food tours and cooking classes during foreign travels. These have provided inspiration to incorporate new ideas into recipes when he gets back home. He has been featured in Fox News, Parade, Yahoo News, Kansas City Living and more. After retiring from the military and moving to southwest Florida, he has focused grilling and smoking locally sourced meats and fish (read: he likes to catch his own fish!)
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