Mushroom Swiss Burgers with Caramelized Onions
Juicy Mushroom Swiss Burgers with Caramelized Onions make the ultimate comfort food dinner. This easy burger recipe delivers rich, savory flavor in every bite and is perfect for grilling season, but it’s just as delicious made on the stovetop, a griddle, or a grill pan.
Servings 4 servings
Calories 541kcal
Ingredients
- 1 ½ pounds 85% ground beef
- kosher salt and freshly ground black pepper - to taste
- 1/2 teaspoon EACH onion powder, garlic powder
- 2 Tablespoons unsalted butter
- 1 large yellow onion - sliced
- 1-2 Tablespoons olive oil
- 8 oz. sliced Bella mushrooms
- 4 slices baby swiss cheese
- hamburger buns - to serve
Instructions
- Caramelize onions. Add butter to a medium cast iron skillet over medium heat. When melted, add sliced onion, salt, and pepper – and cook, stirring frequently to avoid burning. You may need to add splashes of water to moisten the onions as they cook. Continue cooking until onions get nice and golden brown, about 30 minutes.NOTE: If you are feeding a crowd and making extra onions, it may take longer than 30 minutes to fully caramelize.2 Tablespoons unsalted butter, 1 large yellow onion
- Brown mushrooms. Add olive oil to skillet heated over medium-high heat. Add sliced mushrooms to skillet and cook. It will take approximately 10 minutes to brown them properly (longer if making more quantity of mushrooms). Then add salt and pepper to taste.1-2 Tablespoons olive oil, 8 oz. sliced Bella mushrooms
- Prep burgers. Press ground beef into four equal-sized patties, making a slight indention in the centers. Add seasonings to both sides of patties.1 ½ pounds 85% ground beef, kosher salt and freshly ground black pepper , 1/2 teaspoon EACH onion powder, garlic powder
- Prepare grill. Light an outdoor grill to medium-high heat. Add wood chips for extra smoky flavor, if desired.
- Grill burgers. Gently set the prepared beef burgers on the hot grill grates. Grill burgers until they reach your desired temperature, flipping burgers about halfway through. Add Swiss cheese at the very end and let melt. We like our burgers a bit pink in the insides but proceed with caution.4 slices baby swiss cheese
- Assemble burgers. Place the grilled burgers on buns. Top with caramelized onions and browned mushrooms. Beware – these are messy but worth it!hamburger buns
Notes
- Pictured are our homemade pretzel buns. So good!
- You can make these burgers indoors on a grill pan or cast iron skillet.
Tips for making the perfect burger:
- Use a higher fat ground meat. I recommend no leaner than 85%.
- Don’t overwork the meat. This will ensure the meat isn’t tough.
- If making regular patties, press your thumb into the center of the raw patty to form an indentation. We don’t want the center to plump up.
- Season liberally. Season the patties right before you cook them. Salt applied too far in advance will toughen the meat.
- Use high heat. Grill the burgers at 400 degrees or higher.
- Try to avoid flipping the patties too often. Let them cook on one side for several minutes before flipping to the other side.
- Don’t overcook. My family prefers a bit of pink but proceed at your own risk.
Nutrition
Calories: 541kcal | Carbohydrates: 6g | Protein: 38g | Fat: 40g | Saturated Fat: 17g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 16g | Trans Fat: 2g | Cholesterol: 147mg | Sodium: 149mg | Potassium: 824mg | Fiber: 1g | Sugar: 3g | Vitamin A: 317IU | Vitamin C: 3mg | Calcium: 197mg | Iron: 4mg