Most oven brisket recipes follow a “low and slow” rule of about 1 hour per pound at a low–moderate temperature, and you cook until the internal temp is around 195–205°F for sliceable, tender meat. For many home ovens, that usually means 6–10 hours of cook time for a typical 6–10 lb brisket, plus at least 30–60 minutes of resting.

Quick Scoop

  • A common rule of thumb: about 1 hour per pound at 250–325°F.
  • Target internal temperature: 195–205°F for fall-apart tender, or at least 180°F if you prefer it a bit firmer.
  • Always use a meat thermometer; brisket is “done” when it’s tender, not just when the clock runs out.

Typical Oven Time by Weight

Here’s a simple guide using popular oven methods that cook covered at low heat:

  • 3 lb brisket: 3–4 hours at 250–325°F.
  • 5 lb brisket: 5–6 hours at 250–325°F.
  • 8 lb brisket: 8–9 hours at 250–325°F.
  • 10 lb brisket: 10–11 hours at 250–325°F.

Some recipes bake closer to 1 hour 15 minutes per pound at around 300–325°F, which is why a 4.5 lb brisket can take 5–5.5 hours, and a 7 lb one can run well over 6 hours.

Simple Step‑By‑Step Method

  1. Take brisket out of the fridge 30–45 minutes before cooking so it isn’t ice-cold.
  1. Season generously (salt, pepper, spices, or a dry rub).
  2. Preheat oven to 250–325°F, depending on your recipe.
  3. Place brisket fat side up in a roasting pan, often with broth or onions, then cover tightly with foil.
  1. Roast for about 1 hour per pound, checking internal temp near the end.
  2. When the thickest part hits around 195–205°F and a fork slides in easily, it’s ready.
  1. Rest the brisket, still covered, at least 30 minutes before slicing against the grain.

Why Time Varies

  • Oven accuracy: Some ovens run hotter or cooler than the dial.
  • Brisket size and thickness: A thick packer brisket takes longer than a thin flat of the same weight.
  • Cooking temperature: 250°F will need more time than 325°F, but can give gentler, more even results.
  • Stalls: Brisket can “stall” around 160–170°F, sitting at the same temp for a while, just like in a smoker.

Mini “Forum Style” Take

You’ll see a lot of home cooks say things like:

“Plan for about an hour a pound, but don’t obsess over the clock. Go by temp and tenderness—when a probe slides in like butter around 200°F, it’s done.”

Others prefer lower oven temps (around 250°F) because they feel it gives a juicier, more BBQ‑style result, even if it means your brisket is in the oven all day.

Information gathered from public forums or data available on the internet and portrayed here.