The Ultimate Mushroom Swiss Burger with Caramelized Onions is the perfect dish for anyone craving a savory meal. This burger combines juicy beef patties, sautéed mushrooms, and melted Swiss cheese, all topped with sweet, caramelized onions.
If you're a fan of mushrooms, be sure to try our Creamy Garlic Mushroom Pasta or our Puff Pastry Mushroom Gruyere Tart.
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The Mushroom Burger is a well-loved classic combining savory beef patties, sautéed mushrooms, and creamy Swiss cheese. This burger has become a staple in American cuisine, known for its meaty, cheesy flavor.
If you like this comfort food recipe, you may also love our Skillet Sourdough Patty Melt with Special Sauce or our One Pot Cheesy Pasta with Ground Beef.
Why We Love This Recipe
- Savory Flavors: The combination of sautéed mushrooms, caramelized onions, and melted Swiss cheese creates a delicious burger bomb. If you want a similar flavor in soup form, try our French Onion Soup without Wine.
- Quick and Easy: Perfect for busy weeknight dinners, this recipe comes together in just 30 minutes.
- Family-Friendly: A hit with both kids and adults, making it an ideal family meal.
- Versatile: Can be easily adapted to suit various dietary needs and preferences.
Mushroom Swiss Burger Ingredients
- Ground Beef: Use 85% lean ground beef for a juicy yet flavorful patty.
- Cremini or White Mushrooms: Thinly sliced mushrooms add depth of flavor.
- Onion: Thinly sliced and caramelized to add sweetness. We love mushrooms in this Mushroom Risotto with Truffle Oil, too!
- Garlic: Minced and sautéed for an aromatic touch.
- Butter and Olive Oil: Used for sautéing to enhance the richness.
- Swiss Cheese: Melts well over the burger, adding a creamy texture.
- Burger Buns: Toasted to hold all the delicious components together.
- Salt, Pepper, and Onion Powder: Essential seasonings to enhance the flavor of the patties.
A full ingredient list with exact measurements can be found in the recipe card below.
Substitutions & Variations
- Ground Beef: Swap with ground turkey or a plant-based meat alternative for a different protein option.
- Swiss Cheese: Substitute with cheddar or provolone if preferred.
- Butter: Use ghee or olive oil for a dairy-free option.
How to Make Ultimate Mushroom Swiss Burger with Caramelized Onions
STEP ONE: Prepare the Onions
In a large skillet, heat the olive oil over medium-high heat. Add the thinly sliced onions and cook, stirring occasionally, until they become charred and caramelized, about 8-10 minutes. Stir in minced garlic during the last 2 minutes of cooking. Season with salt and pepper to taste. Remove from heat and set aside.
STEP TWO: Prepare the Mushrooms
In the same skillet, melt the butter over medium-high heat. Add the thinly sliced mushrooms and sauté until they are soft and browned, about 5-7 minutes. Season with salt and pepper, then combine the charred onions with the mushrooms.
STEP THREE: Prepare the Burger Patties
Shape the ground beef into 4 burger patties. Season both sides with onion powder, salt, and pepper. Heat a cast iron skillet over medium-high heat. Place the patties on the skillet and cook for 4-5 minutes per side. Make sure the internal temperature of the burger patties reaches a safe minimum of 160°F (71°C).
STEP FOUR: Assemble the Burgers
During the last minute of cooking the patties, add a slice of Swiss cheese on top of each patty and let it melt. Add a generous portion of the sautéed mushrooms and charred onions on top of each burger patty.
Toast the burger buns in a skillet or a toaster. Place each patty on the bottom half of the bun, cover with the top half, and serve immediately.
Expert Tips for Success
👩🍳Jami's Pro Tips: Want to take this recipe to the next level? Check out my expert tips below for the best flavor, texture, and meal prep hacks!
✔️ DO Let the cooked patties rest for a few minutes before assembling to retain their juices.
❌ DO NOT Press down on the patties while cooking.
Storage
Store leftover burger patties and mushrooms separately in airtight containers in the refrigerator for up to 3 days. They can be frozen in an air-tight container for up to 3 months. Tightly wrap them in plastic wrap or aluminum foil before placing them in the container.
To reheat, warm the patties in a skillet over medium heat or in the oven at 350°F until heated through.
Recipe FAQs
A Mushroom Swiss Burger is unique due to its combination of sautéed mushrooms, melted Swiss cheese, and often caramelized onions, all layered on a juicy beef patty.
Yes, you can make a Mushroom Swiss Burger vegetarian by using a plant-based burger patty such as Beyond Beef or Impossible Burger. Additionally, you can substitute regular Swiss cheese with vegan cheese and use plant-based butter for sautéing the mushrooms and onions.
To caramelize onions, thinly slice a small onion and cook it in a skillet over medium-high heat with olive oil. Stir occasionally until the onions become golden brown and caramelized, which usually takes about 8-10 minutes. Adding a bit of salt can help draw out the moisture and improve the caramelization process.
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📖 Recipe
Mushroom Swiss Burger Recipe with Caramelized Onions
Equipment
- Cast iron skillet
- Large skillet
- Spatula
- Toaster
Ingredients
- 1 pound ground beef 85% lean
- 8 oz cremini or white mushrooms thinly sliced
- 1 small onion thinly sliced
- 2 cloves garlic minced
- 2 tablespoons butter
- 1 tablespoon olive oil
- ½ teaspoon onion powder
- Salt and pepper to taste
- 4 slices Swiss cheese
- 4 burger buns
Instructions
- In a large skillet, heat the olive oil over medium-high heat.
- Add the thinly sliced onions and cook, stirring occasionally, until they become charred and caramelized, about 8-10 minutes.
- Stir in the minced garlic during the last 2 minutes of cooking.
- Season with salt and pepper to taste. Remove from heat and set aside.
- In the same skillet, melt the butter over medium-high heat.
- Add the thinly sliced mushrooms and sauté until they are soft and browned, about 5-7 minutes.
- Season with salt and pepper, then combine the charred onions with the mushrooms.
- Shape the ground beef into 4 burger patties.
- Season both sides with onion powder, salt, and pepper.
- Heat a cast iron skillet over medium-high heat.
- Place the patties on the skillet and cook for 4-5 minutes per side, or until the internal temperature reaches a minimum of 160°F (71°C).
- During the last minute of cooking the patties, add a slice of Swiss cheese on top of each patty and let it melt.
- Add a generous portion of the sautéed mushrooms and charred onions on top of each burger patty.
- Toast the burger buns in the skillet or a toaster.
- Place each patty on the bottom half of the bun, cover with the top half, and serve immediately.
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Notes
- Ground Beef: Swap with ground turkey or a plant-based meat alternative for a different protein option.
- Swiss Cheese: Substitute with cheddar or provolone if preferred.
- Butter: Use ghee or olive oil for a dairy-free option.
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