Recommendations
A practical starting range for hamburger patties in the oven is 15-30 minutes at 200°C. This page is built to answer the cooking-time query fast without burying the useful part under a long recipe story.
Use the clock as guidance only and confirm an internal temperature of at least 71°C when that safety target applies.
The result usually shifts most with patty thickness, fat%, broil vs bake, so treat the range as guidance rather than a guarantee.