To prepare the mushrooms: Add the mushrooms and all the seasonings to a large bowl and toss until combined. Allow the mixture to marinade for 1 hour.
Preheat your oven to 220°C (convection) or 200°C (fan-forced). Thread the mushrooms onto a few skewers and place on a large baking tray. Roast for 20-25 minutes or until the edges of the mushrooms look golden and chewy.
To make the tzatziki: Add all ingredients to a small bowl and mix until combined.
Add more liquid for a runnier tzatziki or add more herbs, lemon juice or salt and pepper, to taste
To assemble: Warm the souvlaki or pita breads. Fill with your fillings of choice, the warm mushrooms and tzatziki. Enjoy!
