To prepare a traditional gyro meat recipe, you'll first need to gather your ingredients. First, gather the meat you want to cook. Then, cut your meat into bite-sized pieces. You can use any type of meat, as long as it's not fatty. If you don't have any meat in your kitchen, then you can skip this step. However, if you do have meat that you would like to use, make sure you cut it into smaller pieces so it cooks evenly. Next, heat your oven to 400 degrees Fahrenheit (204 degrees Celsius) and prepare your griddle to medium-high heat. Once the pan is hot, add your chopped onions and garlic and cook until they begin to soften, about 5 minutes. Add your cooked meat to the skillet and stir to coat it with the juices from the onions, garlic, and spices. Cook for another 2 to 3 minutes, or until the vegetables are tender, but still have some bite to them.