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Hearty Farro and Mushroom Burger

This hearty burger, with farro and shiitake mushrooms, makes for a satisfying, meatless lunch.
Ready In 30 minutes
*Plus 2-3 hours for tomato confit
Meal Type Main Dish, Sandwiches
Good For Anytime
Servings 4

Ingredients
  

Tomato “confit”:

  • 1 cup (200g) cherry tomatoes
  • 3 tablespoons (40g) olive oil 
  • 1 clove garlic
  • Pinch kosher salt 

Aioli: 

  • ½ cup (120g) mayonnaise
  • 1 clove garlic, minced
  • 1 tablespoon (15g) freshly-squeezed lemon juice

Burger:

  • 2 tablespoons (25g) olive oil, divided
  • 1 shallot, finely chopped
  • 4 ounces (115g) shiitake mushrooms, sliced, stems discarded
  • 1 cup (150g) farro, rinsed and cooked according to package directions, drained, and cooled
  • ½ cup (50g) panko breadcrumbs
  • ¼ cup (15g) chopped parsley
  • ¼ teaspoon garlic powder
  • ¼ cup (60g) mayonnaise
  • 1 egg
  • ¼ teaspoon salt and finely ground black pepper

Accouterments:

  • ½ cup (15g) baby arugula
  • 4 slices sharp cheddar cheese
  • 4 brioche burger buns, split in half and lightly brushed with melted butter or olive oil

Step by Step Instructions
 

Step 1 (may be done the day before)

  • Prepare the tomato confit by combining the ingredients and baking in a 250°F (120°C) oven for 2-3 hours, or until the tomatoes are soft and jammy. Remove from the oven and set aside until ready to use.
  • Prepare the aioli by combining the ingredients well. Store in the refrigerator until ready to use.

Step 2

  • Heat 1 tablespoon olive oil in a medium skillet, and sauté the mushrooms and shallots until well-cooked, 4-5 minutes. Set aside to cool.
  • In a medium bowl, combine the farro, panko, parsley, garlic powder, mayonnaise, egg, salt, and pepper until well-mixed. Add the cooled mushrooms and shallots.
  • Using your hands, form the burgers into four patties (if you find that they are not sticking together well, you may add a little more mayonnaise or beaten egg).

Step 3

  • Heat the remaining tablespoon olive oil in a skillet over medium heat (you can use the same one in which you made the shallots and mushrooms) and add the shaped burger patties, cooking 3-4 minutes on each side until browned. Add a slice of cheddar atop each during the last 2 minutes of cooking, and cover.

Step 4

  • Toast the buns by briefly heating in a skillet until browned (1-2 minutes). Transfer to a serving dish.

Step 5

  • Divide the aioli between the buns, and add a burger patty. Top each patty with arugula and a few cherry tomatoes, and serve (you may discard or eat the whole garlic clove from the tomatoes).