First, let’s get the hard facts out of the way, because math is hard enough without a raw bird staring at you. For a 15-pound stuffed turkey, you’re looking at 4 to 4.5 hours in a 325°F oven. Yes, that’s a whole Lord of the Rings movie—and you’ll need all three acts.
But here’s the kicker: stuffing changes everything. That lovely bread-and-sausage mixture inside acts like a thermal sponge, slowing down heat penetration by about 30 minutes compared to an unstuffed bird. So, add an extra 30 to 45 minutes to your base time. In other words, plan on 4.5 to 5 hours total, but never trust a clock that hasn’t been calibrated by a thermometer.
The Great Temperature Debate
Your oven may claim it’s 325°F, but it’s lying—all ovens lie. Invest in an oven thermometer, because the difference between 310°F and 340°F is the difference between “golden perfection” and “smoke alarm symphony.” Place the thermometer in the thickest part of the thigh (the bird’s, not yours) and aim for 165°F. Also check the stuffing—it must hit 165°F too, or you’re playing Russian roulette with salmonella.
I once met a man who cooked his turkey “by feel.” He now has a very personal relationship with his bathroom. Don’t be that man.
