How to Cook Frozen Vegetables on the Grill – 6 Pro Tips

Cooking frozen vegetables on the grill is a quick and easy way to add a smoky flavor to your vegetables while keeping them crisp and tender. With the right techniques and seasonings, you can create delicious and healthy grilled frozen vegetables that everyone will love.

This article will discuss 6 pro tips for grilling frozen vegetables.

1. Do Not Thaw the Vegetables Before Grilling

It is recommended not to thaw frozen vegetables before grilling them. Not thawing helps to achieve a crisp finish and prevents the vegetables from becoming soggy. You must also follow specific guidelines to ensure the vegetables come out just right.

frozen broccoli flowers

To correctly grill vegetables without thawing them:

  • Preheat the grill to a high temperature. Make sure the grill is hot before placing the frozen vegetables on it to prevent sticking and ensure even cooking.
  • Cook at a higher heat. Frozen vegetables will release more moisture and take longer to cook, so it’s best to use a higher heat than fresh vegetables.
  • Let the vegetables rest once done. Take them off the grill and wait a few minutes before serving. This will allow the juices to redistribute and keep them from drying out.
  • Flip them occasionally to ensure that they cook evenly.

There are some downsides to grilling frozen vegetables without thawing. For instance, they will take longer and may cook unevenly due to their low temperature. This could result in some parts being undercooked while others are burned. They also may not develop good char or grill marks.

2. Preheat the Grill

Preheating the grill is essential when cooking frozen vegetables for various reasons. First, it ensures fast and even cooking.

Firstly it allows the temperature to become consistent throughout the cooking surface, ensuring that the frozen vegetables cook evenly. It also sets a higher initial heat, which will help to cook the frozen vegetables faster.

Secondly, it prevents the vegetables from sticking. Preheating the grill helps to create a hot surface that will immediately start to sear the vegetables, which helps to prevent sticking.

Thirdly, gives the vegetables a better texture. It gives the frozen vegetables a nice char and grill marks, improving the overall texture and flavor. It also enables them to caramelize and develop a deeper, more complex flavor.

Finally, it reduces the risk of cross-contamination. The high heat kills bacteria, viruses, or fungi that may have started developing instantly.

frozen vegetables on pan

When grilling frozen vegetables, it’s best to use a higher heat than fresh vegetables, as the frozen vegetables will release more moisture and take longer to cook. You may also consider using a grill basket or skewers to keep the frozen vegetables from falling through the grill grates.

The steps for preheating the grill vary depending on the type of grill. To preheat a gas grill, turn it on high and close the lid for 10-15 minutes. For a charcoal grill, light the charcoal and wait for it to ash before spreading it out in an even layer. Once the grill is preheated, you can turn the heat down to the desired level for cooking the frozen vegetables.

3. Do Not Overcrowd the Grill or Baking Sheet

If the vegetables are too close together on the baking sheet, they will steam rather than crisp. Or, they may cook unevenly. There are several ways to prevent vegetables from overcrowding when grilling:

cauliflower onion and peppers on the grill
  • Lay the vegetables on the grill or baking sheet in a single layer.
  • If cooking a lot of vegetables, use a larger grill or cook in batches.
  • Use a grill basket or skewers to keep the vegetables separated.
  • Give the vegetables enough space on the grill grates.
  • Alternatively, use a grill topper or a sheet of foil to create a barrier between the vegetables and the grill grates. This will prevent them from sticking and help keep them from overcrowding.
  • You can also stagger your vegetables on the grill, so they are not all placed in the same area. This will allow heat and smoke to circulate the vegetables and cook them more evenly.
  • Flip the vegetables occasionally so they can cook evenly on all sides.

4. Season to Your Liking

There are a variety of ways you can use seasonings to enhance the taste when grilling frozen vegetables.

Here are a few options:

  • Dry rub. Before grilling the frozen vegetables, make a dry rub by combining your preferred herbs, spices, and salt. Some popular seasonings for grilled vegetables include garlic powder, onion powder, paprika, and dried herbs such as oregano, thyme, and basil. Then apply a generous amount to the frozen vegetables before placing them on the preheated grill.
  • Oil, salt, and pepper. You can also season frozen veggies with just oil, salt, and pepper. Before grilling the frozen vegetables, toss them in a small amount of oil and salt. This will help to create a crust on the vegetables and bring out their natural sweetness.
  • Butter and herbs. Melt a small amount of butter and add herbs. Apply it to the vegetables to add a rich, savory flavor. Proceed to grill the vegetables.
  • Grilling sauces. Once the frozen vegetables are cooked, brush them with a flavorful grilling sauce such as a BBQ sauce or herb butter sauce for added flavor.
  • Seasoning blend. To season the frozen vegetables, you can also use pre-made seasoning blends such as Cajun, Jerk, or Mediterranean blends.
  • Breadcrumbs and cornstarch. Coat the frozen vegetables with a mixture of flour, cornstarch or breadcrumbs to make them extra crisp. The coating also provides a barrier between the vegetable and the heat, helping them to cook evenly.

5. Grill at the Right Temperature

The right temperature for grilling frozen vegetables will depend on the type of vegetable, the thickness of the pieces, and the desired browning and level of doneness.

However, a general rule of thumb is to grill frozen vegetables on a medium-high heat setting, between 375° and 450° Fahrenheit (190° and 230° Celsius). This will allow the vegetables to cook quickly and evenly while developing nice char and grill marks.

6. Don’t Overcook

Overcooking frozen mixed vegetables will make the cooked frozen vegetables soggy rather than crispy. Cooking time varies depending on the type of vegetables and their size. Bigger pieces and harder vegetables take much longer to cook compared to smaller and softer vegetables.

The best way to avoid overcooking them is to grill them within the recommended temperature range and cooking time for the given vegetables. Also, keep an eye on the vegetables while they cook and remove them from the heat as soon as they reach the desired texture. Use a pair of tongs to move them around on the grill and check for doneness.


Grilling frozen vegetables doesn’t require thawing, and it’s a great way to add variety to your summer BBQs and make use of your frozen vegetables all year round. You can grill most frozen vegetables, whether corn, broccoli, peppers, or mixed veggies.

To ensure the frozen vegetables grill perfectly, ensure to preheat the grill on high heat, do not overcrowd the grill, cook at the right temperatures, and keep a close eye on the vegetables to avoid overcooking. Also, season the frozen vegetables to your desired taste.

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