Ingredients
Method
- Preheat skillet for 15 minutes on medium-high.
- Mix meats with egg, olive oil, salt, and pepper. Form a patty.
- Sear burger and cook mushrooms; grill onions with butter.
- Flip burger when crusted; top with gouda. Cover to melt.
- Spread mayo and mustard on toasted bun. Layer lettuce, mushrooms, salt, tomatoes.
- Baste burger with butter, add grilled onions, then assemble.
- Serve immediately.
Nutrition
Notes
Ensure not to overcook the burger to keep it juicy and flavorful.
