These yummy French onion burgers are juicy and topped with delicious melted cheese. They are like a warm hug between two buns! Perfect for a cozy night in.
When I make these, I can’t help but sneak in extra caramelized onions. They just make everything better, don’t you think? 😄 Plus, they’re super easy to whip up for a burger night!
Key Ingredients & Substitutions
Ground Beef: I recommend using an 80/20 blend for juicy burgers. If you’re looking for a leaner option, turkey or chicken can work too, but they may need extra seasoning for flavor.
Onion: Yellow onions are perfect for sweetness when caramelized, but you could also use white or even red onions for a slightly different taste.
Cheese: Swiss or Gruyere cheese melts beautifully over the burgers. If you want a different flavor, try provolone or mozzarella. If you’re dairy-free, consider vegan cheese alternatives.
Burger Buns: Soft burger buns are classic, but feel free to use whole grain, brioche, or gluten-free buns to fit your needs.
How Do You Get the Onions Perfectly Caramelized?
Caramelizing onions can be a game-changer in this recipe. The key is to cook them low and slow to build a rich flavor. Here’s how:
- Start with medium heat and a mix of butter and olive oil to prevent burning.
- Sprinkle sugar to help with the caramelization process — it amplifies their sweetness.
- Stir occasionally over about 25-30 minutes until golden brown and soft.
- If they get too dry, a splash of beef broth or French onion soup can help keep them moist and flavorful.
Easy French Onion Burgers with Melted Cheese
Ingredients You’ll Need:
For the Patties:
- 1 lb ground beef (80/20 blend recommended)
- Salt and freshly ground black pepper, to taste
- 2 tbsp Worcestershire sauce (optional for added flavor)
For the Caramelized Onions:
- 1 large yellow onion, thinly sliced
- 2 tbsp unsalted butter
- 1 tbsp olive oil
- 1 tsp sugar
- 1/4 cup beef broth or French onion soup (optional, for extra flavor)
For the Toppings:
- 4 slices Swiss or Gruyere cheese
- 4 soft burger buns
- Fresh thyme (optional, for garnish)
How Much Time Will You Need?
This delicious recipe will take about 40 minutes total. You’ll spend around 10-15 minutes preparing the ingredients and cooking the patties, plus 25-30 minutes caramelizing those wonderful onions. Then it’s just about assembling your tasty burgers!
Step-by-Step Instructions:
1. Caramelize the Onions:
In a large skillet, heat the butter and olive oil over medium heat. Once hot, add the sliced onions and sprinkle them with sugar. Cook slowly while stirring occasionally until the onions are soft, golden, and beautifully caramelized. This should take about 25-30 minutes. If you want to boost the flavor, add a splash of beef broth or French onion soup near the end. Set those sweet onions aside once they’re done.
2. Prepare the Burgers:
While the onions are cooking, take your ground beef and divide it into 4 equal portions. Form each portion into a patty that’s slightly larger than your buns. Make a small indentation in the center with your thumb to help them cook evenly and prevent puffing. Season both sides with salt and pepper to taste.
3. Cook the Burgers:
Heat your grill or a cast iron skillet over medium-high heat. If you’d like, drizzle some Worcestershire sauce on the patties for an extra punch of flavor. Cook the patties for about 3-4 minutes on each side until they are nicely browned and cooked to your preferred doneness. In the last minute of cooking, place a slice of cheese on each patty and cover it with a lid or foil to melt the cheese perfectly.
4. Toast the Buns:
While your burgers are cooking, you can toast the burger buns in a grill or pan until they are golden brown. This adds a lovely crunch and flavor!
5. Assemble the Burgers:
Now for the fun part! On the bottom half of each bun, spread some of the extra caramelized onions (if you like, add a bit of mayo or mustard as well), then place the cheeseburger patty on top. Pile on more caramelized onions for that signature French onion flavor. Cap it off with the top bun, and if you want, drizzle any extra juices from your skillet over the finished burger for added deliciousness.
6. Serve:
Garnish your burgers with fresh thyme if you’re feeling fancy, and serve them up immediately with your favorite sides like fries or a salad. Enjoy!
Feel free to customize your French onion burgers with any other toppings you enjoy. Bon appétit!
FAQ for Easy French Onion Burgers with Melted Cheese
Can I Use a Different Type of Meat for These Burgers?
Absolutely! While ground beef is traditional, you can use ground turkey, chicken, or even plant-based alternatives. Just keep in mind that cooking times may vary depending on the meat you choose, especially for poultry.
How Can I Store Leftover Burgers?
Store any leftover burgers and caramelized onions separately in airtight containers in the fridge for up to 3 days. Reheat gently in the microwave or on the stovetop, and if you like, toast the buns again for added crunch before serving.
What Can I Substitute for Caramelized Onions?
If you’re not a fan of caramelized onions, you could use sautéed mushrooms for a similar umami flavor, or try roasted peppers for a sweeter touch. For something fresher, consider adding some arugula or spinach on top of the burger.
Can I Make the Caramelized Onions in Advance?
Yes! You can caramelize the onions a day ahead. Just store them in an airtight container in the fridge. When you’re ready to assemble your burgers, simply heat them up on the stove for a few minutes before serving.
