
Grilled onions are a delicious, flavourful, and healthy side dish that can be enjoyed all year round. They are easy to make, requiring very few ingredients and a grill or griddle pan. Grills and griddles differ in shape and temperature, with grills cooking food faster and giving it a BBQ/smoky flavour, while griddles are better for slow cooking and are typically used indoors. Grilled onions can be cooked in a variety of ways, including in foil packets, and seasoned with ingredients such as cumin, garlic, butter, olive oil, salt, and pepper.
Grilled Onions in a Pan
| Characteristics | Values |
|---|---|
| Type of Onion | Vidalia, yellow, sweet |
| Onion Preparation | Peel outer layer, slice a small section off one end, make a small hole in the centre, fill with butter and bouillon cube |
| Onion Size | Small onions, sliced evenly with each slice around 3/4 of an inch in size |
| Seasoning | Salt, pepper, cumin, garlic, garlic powder, onion powder |
| Oil | Olive oil, brushed on both sides of onion slices |
| Grill Type | Cast iron griddle, grill, or aluminium foil packet |
| Grill Temperature | 350°F-450°F, medium-high heat |
| Cooking Time | 25-40 minutes, flipping every 10 minutes |
| Serving Suggestions | Top burgers, cauliflower steaks, grilled vegetables, or meat |
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Choosing your grill
Choosing a grill pan is an important step in your grilling journey. There are a few key considerations to keep in mind when selecting the right grill pan for your needs.
Firstly, decide on the material. Cast iron pans are a popular choice for grilling due to their superior heat retention, which results in those coveted grill marks. They also mimic the outdoor grill experience better than non-stick pans and tend to sear food more effectively. However, cast iron requires more time and energy to heat up and may not be suitable for ceramic stovetops. Non-stick pans, on the other hand, are easier to clean and maintain but may not deliver the same level of searing and grill marks.
Next, consider the shape and size of the grill pan. Square grill pans offer more surface area than round pans, allowing you to cook larger portions of food. Additionally, look for pans with taller and deeper ridges, as these create more defined grill marks and elevate your food above the grease, making it easier to flip. Some grill pans also come with matching presses that can be used to enhance the grill marks further.
Other features to consider include a lid, which helps trap heat, smoke, and flavor, replicating the experience of an outdoor grill. You may also want to opt for a pan with a pull-out tray, which simplifies the process of turning the heat on or off. If you plan to grill in the evenings, look for a grill with LEDs that illuminate the grilling surface and control panel.
Lastly, think about the type of food you'll be grilling. Flat-top grills, for example, offer a smooth surface similar to a griddle, making them ideal for cooking foods like eggs and pancakes that you wouldn't typically consider for a conventional grill. However, they lack the signature grill marks and grilled flavor that comes from direct contact with flames.
Remember, the key to choosing the right grill pan is understanding your specific needs and cooking preferences. Whether you opt for a cast iron pan with deep ridges or a flat-top grill, always refer to the manufacturer's instructions for care and maintenance to ensure the longevity of your grill pan.
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Preparing the onions
If you are grilling onions on a barbecue, it is recommended to use a grill rather than a griddle. This is because grills have ridges that allow juices and oils to fall between the gaps, giving food a barbecue or smoky flavour. If you are cooking inside, a griddle is better as it heats the food from below, allowing it to cook in its own juices. Grills also cook food faster than griddles, so if you are looking for a quick side dish, a grill may be the better option.
When preparing the onions, it is important to consider the desired level of doneness. For example, if you want to sauté onions, you will need to use medium to medium-high heat and stir them frequently. On the other hand, if you want to caramelize onions, you will need to use medium-low to low heat and stir them infrequently, watching for burning.
Another factor to consider is the type of onion. Sweet onions, such as Vidalia onions, are perfect for caramelizing on the grill. If you are using a grill, it is recommended to slice the onions into wedges before grilling. This will allow them to cook more evenly and make them easier to serve. If you are using a griddle, you can slice the onions a bit thicker, aiming for each slice to be around 3/4 of an inch in size.
Before grilling, it is important to brush both sides of each onion slice with olive oil or butter and season with salt and pepper. This will help to ensure that the onions are tender and flavourful. If you are using a grill, you can also lightly oil the grate to prevent sticking.
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Seasoning
After this, you can add your seasoning of choice. A simple option is to sprinkle salt and pepper on the onions. You can also add fresh herbs such as chopped rosemary or thyme. If you want to add more flavour, you can use steak seasoning, Cajun seasoning, Italian seasoning, or a favourite seasoning blend. For a different taste, you can use cumin, smoked paprika, or chilli powder as alternatives to salt and pepper.
If you are cooking the onions in a pan, you can add butter and salt, and a little water to create a caramelization process. You can also add balsamic vinegar, which some people enjoy with their grilled onions.
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Cooking temperature
Grilled onions are a delicious and nutritious side dish that can be cooked in a variety of ways. When grilling onions in a pan, the cooking temperature will depend on the type of grill or griddle you are using, the desired level of caramelization, and the cooking time.
If you are using a grill, set the burners to medium-high heat, around 400-450 °F. Place the onion slices directly on the grill grates for a more caramelized result, or use a foil packet for indirect heating to prevent deep caramelization and reduce the risk of burning. For direct grilling, brush the grill with oil and place the onion slices directly on the grill grates, flipping them every 10 minutes until they are golden brown and tender. This typically takes 25-40 minutes.
If you are using a griddle, set the heat to 350 °F. Griddles provide a more even distribution of heat and cook food more slowly and at a lower temperature than grills. Place the onion slices on the griddle, brushing them with oil before flipping. As with grilling, cook the onions until they are golden brown and tender, flipping them periodically.
When cooking onions, it is important to avoid overheating the pan. If the pan is too hot, the onions may burn. Start with a cold pan and adjust the heat as needed, keeping the flame barely above the lowest setting. Add oil to the pan and stir the onions frequently to prevent them from sticking or burning. For sautéing, use medium to medium-high heat, and for browning or caramelizing, use medium-low to low heat.
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Cooking time
When grilling onions in a pan, there are a few factors that will determine the cooking time. These include the variety of onion, the type of grill or griddle, the heat level, and the desired level of doneness.
Onion variety: Different types of onions will cook at slightly different rates. For example, smaller onions will generally cook faster than larger ones. Sweet onions, such as Vidalia onions, are recommended for grilling and caramelizing.
Grill or griddle type: Grills and griddles also vary in terms of cooking time. Grills, with their higher temperatures of around 400 °F, will cook onions faster than griddles, which have an optimum heat of around 350 °F. Griddles are better for slower cooking at lower temperatures.
Heat level: The cooking time will depend on the heat level. For example, grilling onions at 400 °F will take around 25-30 minutes, while grilling at 350 °F may take 30-45 minutes. Grilling onions at a lower temperature for a longer period of time can result in a softer texture.
Desired doneness: The cooking time will also depend on how well-done you want your grilled onions to be. For caramelized onions, which are cooked low and slow, the cooking time will be longer, around 3 times the length of time it takes to sauté onions. Sautéed onions are typically cooked within minutes, while caramelized onions are cooked until they are golden brown and tender.
It's important to note that cooking times may vary depending on your specific setup and preferences. It's always a good idea to keep an eye on your onions as they grill and adjust the cooking time as needed to achieve your desired level of doneness.
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Frequently asked questions
You can use any type of onion, but sweet onions such as Walla Walla or Vidalia are best for grilling as they caramelize perfectly.
Peel the skin off the onions and slice them into 1/2-inch thick slices. Slide a metal or wooden skewer through the centre of the slices to prevent them from falling apart.
Preheat your grill to around 400 degrees Fahrenheit. If you are grilling onions in a pan, grill them over medium heat for 15-20 minutes or until tender.
If your onions are burning, lower the heat and cook them more slowly. If grilling in a pan, add a few tablespoons of water to prevent the onions from drying out.
Grilled onions are done when they are golden brown and tender. This usually takes around 25-40 minutes depending on the heat of your grill.











































