Inside-Out Burger with Mushrooms

Save Recipe
  • Level: Easy
  • Total: 45 min
  • Active: 25 min
  • Yield: 4 servings
Share This Recipe


1 large onion, diced

1 pound ground beef (80 percent lean)

1/2 cup Worcestershire sauce 

1 tablespoon garlic powder 

1 tablespoon onion powder 

Salt and pepper 

3 tablespoons shredded Cheddar

3 tablespoons shredded pepper Jack cheese 

Oil, for oiling grill grates

4 large portobello mushrooms 

1 red onion, sliced into thick rings

4 hamburger buns, split

2 cups mayonnaise 

1 cup sriracha hot sauce

Arugula, for topping 


  1. In a large bowl, fold the onions into the ground beef, then add the Worcestershire, garlic powder, onion powder and some salt and pepper.
  2. In a small bowl, mix together the Cheddar and Jack cheeses.
  3. Form the meat mixture into 8 thin patties. In 4 patties, use your thumb to make a dent in the middle; fill the dent with some of the cheese. Sandwich with the remaining 4 patties, sealing the edges to close the cheese inside.
  4. Prepare a grill for medium-high heat. Lightly oil the grill grates.
  5. Cook the burgers to the desired doneness, 4 to 5 minutes per side. Grill the mushrooms and onions until tender and charred, about 5 minutes per side. Toast the buns, cut-side down, on the grill until marked, 1 to 2 minutes.
  6. In a small bowl, stir together the mayonnaise and sriracha.
  7. Place the patties on the buns and top with arugula and grilled onions and mushrooms. Finish with a drizzle of sriracha mayonnaise and the top buns.