1. Prepare hamburger patties: choose fresh hamburger patties or cooked hamburger patties. If you use a frozen hamburger, thaw it according to the instructions on the package.
2. Preheat the oven: preheat the oven to about 190 degrees Celsius.
3. Preparation of baking tray: Put a grill or tin foil on the baking tray to prevent hamburger patties from sticking to the baking tray.
4. Baking time control: put the hamburger cake on the baking tray to ensure a certain interval between them. Put the baking tray in the preheated oven. The baking time depends on the thickness of the hamburger cake and the degree of maturity you expect. Generally speaking, each side is baked for 5-7 minutes.
5. Turn over: When the hamburger cake is half baked, turn it over and heat both sides evenly.
6. Extra steps (optional): If you like to add cheese to the hamburger cake, you can put cheese slices on the hamburger cake during the last 1-2 minutes of baking time and let it melt.
7. Temperature inspection: Be sure to measure the internal temperature of hamburger cake with a food thermometer to ensure that it reaches the safe edible temperature. The internal temperature of hamburger cake should reach above 70 degrees Celsius.
8. Let it stand and assemble: Take the baked hamburger out of the oven and let it stand for a while. Then, put the hamburger cake into the hamburger and add vegetables, sauces and other ingredients according to personal taste.
Please note that the baking time and temperature may be different depending on the oven model and the thickness of hamburger cake. Therefore, we should pay close attention to the baking process to ensure that the hamburger cake will not be overcooked.