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Grilled Portobello Burger with Tzatziki

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This incredibly flavorful grilled portobello burger is served on focaccia bread with feta and tzatziki, a Greek cucumber dill sauce.

Ingredients

Scale
  • 4 portobello mushrooms
  • 3 tablespoons aged balsamic vinegar
  • 3 tablespoons olive oil
  • Kosher salt
  • Pepper
  • Focaccia bread (homemade or storebought)
  • Tzatziki
  • 1/2 red onion
  • 1/3 cup feta cheese crumbles

Instructions

  1. Heat a grill to medium-high heat. Place the portobello mushrooms in a dish or pan and rub the balsamic vinegar and olive oil onto both sides of each with your fingers; use just enough of each to coat evenly. Let sit to marinate until the grill is ready.
  2. Meanwhile, make the tzatziki.
  3. When the grill is ready, grill the portobellos on a medium-high grill for 4-5 minutes on each side, until juicy.
  4. Slice the focaccia bread and thinly slice the red onion.
  5. To serve, place a mushroom on one half of the focaccia bread; top with tzatziki sauce, red onion slices, feta crumbles, and the other half of of the bread.