Sirloin Tip Roast (Low-Carb, Easy)

Winter is roast season. When the weather turns cold, there’s nothing more practical—or satisfying—than a slow-cooked beef roast. Many people get intimidated by them, but grassfed roasts are one of the easiest and most cost-efficient ways to feed a family. With a little patience and steady heat, you can turn a simple sirloin tip into a tender, rich meal that fits right into a keto or low-carb way of eating.

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Ingredients

• 1 sirloin tip roast, 2.5–3.5 lbs

• 2–3 tsp kosher salt

• 1½ tsp black pepper

• 1 tbsp garlic powder

• 1 tbsp onion powder

• 2 tsp dried thyme or rosemary (optional but helpful)

• 3 tbsp beef tallow or butter

• 1 cup beef stock (preferably homemade)

Instructions

1. Season the roast

Pat the roast dry. Mix the salt, pepper, garlic powder, onion powder, and herb of your choice. Coat the roast on all sides and let it sit at room temperature for about 30–40 minutes. This gives the salt time to start working its way in.

2. Sear it well

Heat beef tallow or butter in a heavy pan over medium-high heat. Sear the roast on all sides until a brown crust forms. This step builds flavor naturally—no sugar or sauces needed.

3. Slow roast

Move the roast to a roasting pan. Add the cup of beef stock to the bottom of the pan to keep the air moist.
Cook at 275°F until the internal temperature reaches:

• 125°F for rare

• 130–135°F for medium-rare

A 3-lb roast will usually take 75–110 minutes, depending on your oven. Low temperature is the secret—high heat makes a sirloin tip roast dry and tough.

4. Rest longer than you think

Rest the roast for 20–25 minutes before slicing. This allows the juices to redistribute, keeping it tender and moist.

5. Slice thin

This cut is lean, so always slice thinly against the grain. Thick slices can feel tough no matter how well you cooked it.

Optional Low-Carb Pan Sauce

While the roast rests, place the roasting pan on the stove over medium heat. Reduce the juices until slightly thickened, then whisk in 1–2 tbsp butter.
That’s it—no carbs, no starch, just honest flavor.

Serving Ideas

• Mashed Potatoes
  

• Roasted cauliflower or broccoli cooked in beef tallow

• Simple green salad with olive oil and salt

• Sautéed mushrooms

FAQ

Q: Why choose a sirloin tip roast?
A: It’s lean, affordable, and full of beef flavor. With slow, gentle cooking, it becomes tender without needing marinades or sauces.

Q: How is grassfed beef different for roasts?
A: Grassfed beef is naturally leaner, so it cooks best at lower temperatures and benefits from a longer rest time. The flavor is deeper and more natural than grain-fed beef.

Q: What sides work well with a keto roast?
A: Simple vegetables like roasted cauliflower or sautéed greens. You don’t need anything fancy—just real food cooked in tallow or butter.

Q: How do I make sure the roast stays tender?
A: Cook low and slow, then rest for at least 20 minutes before slicing thin against the grain. That’s what keeps it juicy.