To cook hamburgers in the oven, preheat the oven to around 375°F to 425°F. Form the seasoned ground beef into patties, about 1/2 inch thick with a small depression in the center to prevent puffing. Place the patties on a baking sheet lined with foil or parchment paper or on a baking rack inside a sheet pan for even cooking. Bake the burgers for about 12 to 25 minutes depending on the oven temperature and desired doneness, flipping halfway through if preferred. For medium-well burgers, bake around 12-15 minutes at 425°F until the internal temperature reaches 155°F, or bake at 375°F for 20 minutes until 160°F internal temperature. Add cheese slices in the last 1-2 minutes to melt before removing from oven. Let burgers rest for a few minutes before serving. Key points:

• Oven temperature: 375°F to 425°F
• Patty thickness: about 1/2 inch
• Baking time: 12-25 minutes depending on temperature and size
• Internal temperature: 155-160°F for medium to medium-well
• Add cheese last 1-2 minutes if making cheeseburgers
• Let rest after baking

This method gives juicy, evenly cooked burgers with minimal mess and can be adjusted based on how well done one wants the burgers.