To make this recipe, start at the produce store and get portobello mushrooms, garlic, lemon, English cucumbers, tomatoes, fresh dill, and red onions. “Standard cucumbers tend to dilute the tzatziki sauce, so I like to use English cucumbers here,” says Hahn.
Next, check your spice cabinet for oregano, salt, garlic powder, onion powder, dried dill, marjoram, and black pepper. This combination of spices gives the mushrooms an earthy Greek flavor.
To finish, you’ll need olive oil, red wine vinegar, Greek yogurt, and feta cheese. “If you have dietary restrictions and would like to make this dish dairy-free and vegan, you can substitute dairy-free yogurt or dairy-free feta,” says Hahn.