Learn How to Fry Onions for Burgers. Easy, delicious and the perfect addition to your favorite burger and to so many meals.

Grilled Onions on a white plate.
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We love using our Blackstone Griddle. We have cooked eggs, bacon and salmon on the griddle and everything always comes out perfectly.

We love grilled onions on just about anything. This strong flavored vegetable cooks down to a sweet, caramelized, and tender topping. It amazes me how the flavored completely transforms into something so delicious that I can enjoy by themselves

When preparing to cook onions, they need to be cook just right. We think cooking them on the Blackstone Griddle allows you to perfectly cook them without any recipe disaster.

How to Fry Onions for Burgers

Fry onions are great on burgers, pizza, salad, and even for breakfast. Our favorite way to enjoy them is on top of a smash burger. You will begin by preparing your onion and cutting it into rings so you can separate the onions.

Once you griddle has reached a temperature of at least 350 degrees and has been seasoned with oil, you are now ready to begin cooking your onions.

It is really that simple. Cook the onions until they are golden brown and then top them on your burger.

Ingredients

Ingredients needed - yellow onions, avocado oil, butter
  • Yellow Onions
  • Avocado Oil
  • Butter

For the full list of ingredients and recipe, scroll to the bottom.

Tools you Need

Having the right tools makes it easy to cook food on your Blackstone Griddle. These are the best tools that we recommend.

How to Fry Onions on Blackstone

  • Step 1 – Cut and Prepare your Onions – Cut the onions in half. Then cut the ends off of each half and peel the onions. Slice the onions into thin half moons and separate the rings with your fingers.
Cutting onions on a cutting board with a knife.
  • Step 2 – Prepare your Griddle – Preheat the Griddle or Blackstone Griddle over medium heat (approximately 350-400 degrees F).
  • Step 3 – Add Onions to Griddle – Place the onions directly on the griddle and place the avocado oil and butter on top.
Onions on a griddle
  • Step 4 – Begin Cooking the Onions – Sauté the onions for about 10-15 minutes stirring them every few minutes until the the onions are soft and a light brown color.
Cooking onions on a griddle
  • Step 5 – Top with a Burger Press – You can also top the onions with a burger press to speed up the cooking process as well and the onions will brown quicker.
Grilled onions being pressed by a burger press on the griddle.
  • Step 6 – Perfectly Grilled Onions – Then they are ready to serve with your favorite type of burger and enjoy.

Expert Tips

  • Add Seasoning – You can season them with salt, pepper, and even garlic to the grilled onions.
  • Freeze Saute Onions – Freeze the sauté onion and a airtight container. They can be frozen for about 6 months. When you are ready to serve, thaw in the refrigerator. Reheat in the microwave or in a skillet.
  • Cast Iron Skillet – You can also cook these onions in a cast iron skillet oiled with olive oil.
  • Gas Grill – Oil the grill grates, place the onions in a foil pack and grill.
Grilled Onions on a the griddle.

Which Onions are Best for Grilling

  • Red Onions – Great for burgers, steak, sandwiches, and salads.
  • Yellow Onions – Yellow onions have a milder flavor and are great for burgers, stir-fry’s, fajitas, casseroles, and Mexican dishes.
  • Sweet Onions – These sweet onions are perfect on pizza, pasta, and sauces.

Ways to use Grilled Onions

  • Burgers
  • Casseroles
  • Mexican Dishes
  • Sandwiches
  • Stir-Fry’s
  • Side Dish
Grilled Onions on a white plate.

Frequently Asked Questions

How to Store Leftovers

These are best served fresh but you can also refrigerate them for up to 5 days. Heat the grilled onions and add them to your leftover for an amazing lunch the next day.

How long does it take to Fry Onions

Cooking the onions on the griddle doesn’t it take long. The take about 10-15 minutes until the onions start to brown on medium high heat. Stirring frequently until the onions are fully cooked.
We like them to have a little crisp around the edges before pulling them off the griddle.

More Easy Grilling Recipes

If you make this Blackstone Sauteed Onions, please leave us a comment. We love hearing from you.

How to Fry Onions

5 from 29 votes
Learn How to Fry Onions for Burgers. Easy, delicious and the perfect addition to your favorite burger and to so many meals.
Prep Time 5 minutes
Cook Time 10 minutes
Total Time 15 minutes
Servings 4
Cuisine American
Course Side Dish
Calories 78

Ingredients

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Instructions

  • Cut the onions in half. Then cut the ends off of each half and peel the onions. Slice the onions into thin half moons and separate the rings with your fingers.
  • Preheat the Griddle or Blackstone Griddle over medium high heat (approximately 350-400 degrees F).
  • Place the onions directly on the griddle and place the avocado oil and butter on top. Sauté the onions for about 10-15 minutes stirring them every few minutes until the the onions are soft and a light brown color.
  • Then they are ready to serve with your favorite type of burger and enjoy!

Recipe Notes

I prefer to make these with yellow onions but you can easily use white onions as well.
These are best served fresh but you can also refrigerate them for up to 5 days.
You can also top the onions with a burger press to speed up the cooking process as well and the onions will brown quicker.

Nutrition Facts

Calories 78kcal, Carbohydrates 5g, Protein 1g, Fat 6g, Saturated Fat 2g, Polyunsaturated Fat 1g, Monounsaturated Fat 3g, Trans Fat 1g, Cholesterol 8mg, Sodium 25mg, Potassium 81mg, Fiber 1g, Sugar 2g, Vitamin A 89IU, Vitamin C 4mg, Calcium 13mg, Iron 1mg

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About the Author

Hi, I’m Carrie. Welcome to Grill on a Dime!

I’m on a mission to help you cook delicious meals without busting your budget. From the Best Blackstone recipes, to grilling, and easy smoker recipes, together we are going to cook real food, with easy ingredients… for real families!

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Comments

  1. Rhonda says:

    What can you substitute for the avocado oil?

  2. Carrie says:

    You can use vegetable oil. I don’t recommend olive oil, because it cannot handle the high heat.