This easy and delicious Caramelized Onion Burger is a mouth-watering burger that is packed with flavor! A juicy burger that is layered with all the most amazing toppings. The whole family is going to love these on Game Day Sunday or a backyard cookout!
The Best Caramelized Onion Burger
The perfect juicy onion burger recipe that would be a real crowd-pleaser for Super Bowl Sunday! It’s one of the best sliders we have honestly ever tasted and we cannot wait to share it with all of you. This amazing caramelized onion burger recipe combines the amazing flavor of sweet caramelized onions, balsamic mayo, crispy bacon, dill pickles and a juicy oven-baked slider (or burger). They are easy to prep ahead of time and toss in the oven before serving. Create a delicious burger bar and let your guests make their own creations!
Looking for More Burger Recipes?
If you love burgers as much as we do, you definitely need to try our Flying Dutchman Burger!
What You Will Need
- balsamic vinegar & mayonnaise – two ingredients combine to make the most delicious burger sauce.
- yellow onions – these sweet onions are perfect for cooking down to make the best caramelized onions.
- olive oil – just a drizzle in the hot pan to cook the sliced onions.
- salt & pepper – simple seasonings that are always a must when cooking burgers!
- ground beef – pick-up your favorite ground beef from your local grocery store or butcher shop.
- ghee or butter – use the one that works for you!
- buns – option to use any of your favorite hamburger buns – regular, gluten-free, lettuce bun, etc.
- toppings: bacon, cheese, & pickles.
How To Make A Caramelized Onion Burger
The first steps to making this easy recipe are to cut each onion into thin slices. Bring a large skillet to a medium high heat, coat the bottom of the pan in oil, and add the onion slices to cook.
As they cook down, add a sprinkling of salt and pepper. Continue moving around the pan and cooking for about 15-30 minutes or until golden brown.
Put the ground beef, salt, and pepper in a large bowl and use hands to fully combine. Form into uniform patties and press an indent into the middle of each. Season the outside of the patties with salt and pepper. Then add a small amount of ghee or butter to the middle of each slider. Line a cookie sheet with aluminum foil, place an oven-safe wire rack on top, spray with cooking spray and then space out the sliders in a single layer. Put the burgers under the broiler on the high setting to cook for 10 minutes. While they cook, mix together the balsamic mayo in a small bowl.
Now assemble the burgers any way you want!
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Caramelized Onion Burger
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Total Time: 50 minutes
- Yield: 12 sliders 1x
- Category: Appetizer + Dinner
- Method: Oven + Stove Top
- Cuisine: American
Description
Our Caramelized Onion Burger (or sliders) are the perfect Game Day party food that everyone will love!
Ingredients
Balsamic Mayo:
- 2 tablespoons mayo
- 1 teaspoon balsamic vinegar
Caramelized Onions:
- 3–4 sweet yellow onions, sliced
- 1 tablespoon extra virgin olive oil
- 1/2 teaspoon kosher salt
- 1/2 teaspoon ground black pepper
Burger:
- 2 pounds ground beef
- 2 teaspoons kosher salt
- 2 teaspoons ground black pepper
- ghee or butter
Serving Suggestion: hamburger buns or iceberg lettuce (for lettuce buns)
Topping Options: sliced cheese, bacon, and pickles
Instructions
- Balsamic Mayo: Place ingredients in a small bowl and mix to combine. Make additional sauce as-needed.
- Caramelized Onions: Bring a large cast iron skillet to medium-high heat. Add olive oil and move it around so that the bottom of the pan is coated. Add onions and sprinkle with salt and pepper. Move onions around in the pan and bring heat down to medium heat once onions start to cook down. Continue cooking onions 15-30 minutes, until they start to turn golden brown. Once onions are golden brown, turn off heat, and set aside until burgers are ready.
- Prep Burgers: Place ground beef, salt and pepper in a medium bowl and mix with hands to combine. Divide into 12 equal slider patties. Ensure they are approximately 1/2 inch thick. Make a small indent in the middle of each burger and place a small bit of ghee inside. Sprinkle the tops of the burgers with a little more salt and pepper.
- Cook Burgers: Turn oven broiler to HIGH and line a baking sheet with aluminum foil and place an oven-safe wire rack on top. Spray the rack with olive oil or other non-stick cooking spray. Place the sliders in a single layer on the wire rack and place in the oven on the middle rack to cook for 10 minutes (this will result in a medium-rare center). Remove and let rest at least 5 minutes at room temperature.
- Assemble Burgers: For a Paleo/Whole30 – serve with a caramelized onions, lettuce bun, bacon, pickle and balsamic mayo. For a non-Paleo/Whole30 option serve on a slider bun of your choosing, add some cheese and then the caramelized onions, bacon, pickle, and balsamic mayo.
Notes
- Whole30/Paleo: double check your ingredients on your balsamic vinegar, mayo, bacon and pickles.
- Full Size Burgers: Simply make 8 burger patties instead of 12. Make sure you are flattening them enough before cooking. Cook for 10-12 minutes for medium rare.
- Grill: another great way to cook the burgers/sliders, if you prefer!
Nutrition
- Serving Size: 1 slider
- Calories: 143
- Sugar: 1.8 g
- Sodium: 324.6 mg
- Fat: 6.2 g
- Carbohydrates: 4.1 g
- Protein: 17.1 g
- Cholesterol: 48.7 mg
Rebecca Healy says
If you want an over the top but simple burger, you have to try this! The caramelized onions are such a simple, quick, and easy way to jazz up a great weeknight burger!
Erin says
yay! So awesome to hear, Rebecca!