Burger Gyro Recipe Ingredients: 4 Greek pita bread rounds tzatziki 1 large onion, chopped 2 medium tomatoes, diced Crumbled feta cheese 4 prepared hamburgers, halved Dried Greek oregano Directions on How to Make Burger (Bifteki) Gyros: Make the pita bread and tzatziki according to the recipe directions. Feel free to use store bought tzatziki or pitas if you dont have time to make your own. Put a piece of aluminum foil down on a flat surface. Place a pita bread in the center of the foil. Spread some tzatziki across the middle of the pita bread. Top with chopped onion and diced tomato. Add two of the hamburger halves. Sprinkle with feta cheese and another spoonful of tzatziki, if desired. Sprinkle some oregano over the gyro. Roll the gyro and wrap it in aluminum foil so it can hold the shape. Repeat until youve used up all the pita bread.