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Grilled Zucchini Foil Packs

Grilled zucchini foil packs make a no-mess BBQ side with steam-burst packets of tender zucchini, onion, and cherry tomatoes. Foil is sealed at the grill, then opened to reveal garlicky zucchini glistening with herb butter and melted parmesan.
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Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings: 4 servings
Course: Side Dish
Cuisine: American
Calories: 190
Ingredients Equipment Method Notes

Ingredients
  

Zucchini
  • 4 zucchini Medium zucchini, sliced into 1/2-inch coins.
Onion
  • 1 onion Medium onion, sliced into rings.
Cherry tomatoes
  • 1 cup cherry tomatoes
Butter
  • 3 tbsp butter Cut into pats.
Garlic
  • 4 garlic Minced cloves.
Italian seasoning
  • 1 tsp Italian seasoning
Red pepper flakes
  • 0.25 tsp red pepper flakes
Salt and black pepper
  • 0.25 tsp salt and black pepper To taste.
Parmesan
  • 0.25 cup parmesan cheese Grated.
Fresh herbs for garnish
  • 1 fresh herbs for garnish Chopped, for finishing.

Equipment

  • 1 sheet pan

Method
 

Prepare grill and foil packets
  1. Preheat your grill to medium-high.
  2. Divide zucchini, onion rings, and cherry tomatoes evenly among four large sheets of heavy-duty aluminum foil.
  3. Top each portion with butter pats, minced garlic, Italian seasoning, red pepper flakes, salt, and black pepper.
  4. Fold foil tightly to seal into packets, pressing edges firmly to prevent leaks.
Grill until tender and finish
  1. Grill the packets over direct heat for 18–20 minutes, until the zucchini is tender.
  2. Carefully open packets away from you so the steam bursts up and away.
  3. Sprinkle each packet with grated parmesan and let it melt, then top with fresh herbs and serve in the foil.

Notes

Key pro tip: seal the foil edges tightly—if a packet leaks, you’ll lose steam that’s responsible for the tender, glistening zucchini texture. Refrigerate leftovers in a covered container for up to 3 days; reheat on the grill or in a skillet with a splash of water. Freezing isn’t recommended because zucchini can turn watery after thawing. Dietary swap: use dairy-free butter and a dairy-free parmesan-style topping for a lactose-free version.