How long to cook bacon in the oven or how long it takes to cook bacon in the oven doesn’t have any golden rule, it is subjective to a lot of variables. Considering these variables would help you understand rightly of how long it would take to cook bacon perfectly in the oven as well as in flame.
The first consideration is deciding upon the types of bacon to roast as we know there are a lot of variants in bacon types depending on the meat source, sizes and curing, they could be cured, uncured, hickory-smoked, applewood, smoked, pork bacon, beef bacon, elk or venison bacon, mutton bacon, turkey bacon, duck bacon, soy bacon, slab, Canadian or pancetta etc. etc. Again depending on cuts, some are thick while some are thin means selection has no boundary at all.
Usually fattier and thinner the bacon is the lesser time it will take to cook and turn crispy while thicker, low-fat bacon will tend to take longer cooking time. Again red meat bacon will deserve more time than white meat bacon. But it’s certain if you wish to cook a large batch of bacon into the oven (usually over a pound) certainly and considerably it would save your time. Because whatever the quantity is an oven in its capacity will take the same time, be it small or large but in case of open flame cooking scenario is not the same as you have to manage small manageable batch each time.
These are just a few thumb rules and common sense, but the best judgment could be done by your eyes, whenever you notice the desired change in color and texture of your bacon to golden brown and crispy you should stop the cooking, that’s your golden time of cooking bacon. Following any recipe is just a general guideline, you will perfect in your cooking to your taste by trial and error by continuous practice.
Even you are eager to know the timing in scale we can convince you that it would take approximately 30 minutes in total with 10 minutes for preheating and rest 15 to 20 minutes for cooking, precooking steps and serving time is excluded here and a standard natural, uncured, smoked pork bacon of regular thickness (neither thin nor thick) is considered here. And also the outcome is desired a crispy edge and chewy central part. The last 5 minutes is very crucial, you have to put a constant eye over it otherwise it may turn crisp to burn. Turkey bacon on the other hand takes almost same time as pork bacon except microwave baking. Usually it take 15 to 25 minutes on an average while microwave baking takes only 2 to 2 minutes and 30 seconds at best on an average.