Prepare the filling:
- Heat olive oil in a large skillet over medium heat.
- Ad chopped onion and garlic, sauté until translucent.
- Add Ground Beef and cook until browned. Drain excess fat.
- Add mushrooms and cook until they release their moisture and become tender.
- Season with oregano, cumin, salt, and pepper. Remove from heat and let cool slightly.
- Stir in shredded mozzarella and crumbled feta cheese until well combined
Prepare the Tzatziki sauce:
- In a medium bowl, combine Greek yogurt, grated cucumber, minced garlic, lemon juice, olive oil, and chopped dill.
- Mix well and season with salt and pepper to taste. Refrigerate until ready to use.
Assemble the Pita Pockets:
- Warm the pita pockets slightly in the over or microwave for easier opening.
- Carefully cut the tops off the pita pockets to create an opening.
- Fill each pita pocket with a generous amount of the beef and mushroom filling
- Add fresh lettuce, cherry tomatoes, and red onions.
Serve:
- Drizzle the tzatziki sauce over the filled pita pockets or serve it on the side for dipping.