Here’s the short, sweet, and slightly scientific answer. For an 8-pound bone-in turkey breast, you’re looking at roughly 2 to 2.5 hours in a 350°F (175°C) oven. If you’ve got a boneless breast (the lazy cook’s best friend), that drops to about 1.5 to 2 hours.
But wait! Before you set a timer and take a nap, remember this: ovens are liars. They run hot, they run cold, and they have mood swings. That’s why the only truth-teller is a meat thermometer. It’s like a tiny lie detector for your bird.
You want the internal temperature to hit 165°F (74°C) in the thickest part of the breast. No cheating by touching the bone—it’s hotter than a scandal. Go for the meaty center, and when it beeps, you’re golden.