Here’s how to make bacon in the oven: 1  Preheat your oven to 400F. 2  Place a cookie rack over a baking sheet. 3  Lay the bacon strips on the rack, and put the rack and sheet in the oven. 4  Cook for 10-20 minutes, depending on how crispy you like your bacon.5  Devour yourself, or hand over to delighted guests/family/nosy neighbors. Place a cookie rack over a baking sheet. 2  Lay the bacon strips on the rack, and put the rack and sheet in the oven. 3  Cook for 10-20 minutes, depending on how crispy you like your bacon.