Rotisserie Cooking a Beef Sirloin roast

One of the nicest things about rotisserie cooking on your BBQ is, once you get it setup and running, there's not much to do but sit in the shade with a cold beer, listen to it go round and round and wait for those magnificent BBQ smells.

For this rotisserie recipe we're cooking a sirloin roast, quite likely the most flavorful cuts of beef you'll find.

And just to give this flavor a slight tweak we're pre-soaking the beef in a root beer marinade.

The unusal taste of root beer seems to be a perfect partner to complement the taste of sirloin beef, the licorice and cinnamon accents I think.

Plus it's got Sassafras in it, and I just like that word.

rotisserie cooking sirloin

Just pour the root beer over the roast, cover and refrigerate at least 4 hours but best if you can leave it soak overnight before cooking.

If you're interested in learning how to use a BBQ rotisserie click here.

If you don't feel like beef how about cooking a Rotisserie Chicken recipe instead?

› Rotisserie Beef Sirloin Roast

Serves: 4

Prep time: 10 minutes
Cook time: 1 hour

In-Direct Heat: 350F - 375F

Note: for best results marinate 4 hours up to overnight before cooking.

What you'll need: 

  • One 2 lb Sirloin Tip Roast
  • 2 Cans Root Beer (or enough to completely cover roast)
  • 2 tablespoons olive oil
  • 1 tablespoon ground black pepper
  • 1 tablespoon coarse kosher salt
  • 1 tablespoon dried rosemary leaves

pepare sirloin roast

Step 1:
Pierce the beef all over with a fork to allow maximum penetration of the Root Beer.

marinate beef in root beer

Step 2:
Cover the entire beef with Root Beer.

Shown here is the roast in a reusable plastic storage bag containing the beef and root beer, all held in a bowl.

Refrigerate covered at least 4 hours or up to overnight.

putting beef roast on rotisserie

Step 3:
Insert the rotisserie spit or skewer through the beef and secure the prongs at each end in the meat.

Shown here is actually two sirloin roasts I picked up on sale installed on the rotisserie spit end to end.

beef roast with rosemary

Step 4:
Preheat the grill to 350F to 375F.

Remove the grates and place a disposable aluminum pan over the burners large enough to catch all roast drippings and to hold water to keep roast moist while cooking.

Rub the roast all over with the olive oil.

Season the roast with the pepper, salt and rosemary.

cooking beef rotisserie on the grill

Step 5:
Install the rotisserie spit and meat in the bbq according to the manufacturers instructions.

Ensure the pan is placed under the roast and is 1/2 full of water.

Turn on the rotisserie and make sure the roast rotates freely during cooking.

Close the lid. 

sirloin roast cooked on bbq rotisserie

Step 6:
After 45 minutes insert a meat thermometer in the meat and check for temperature.

Remove it from the grill when the internal temperature reaches 125F for rare or 145F for medium.

Wrap in aluminum foil and allow to rest for 5 - 10 minutes before carving to allow juices to redistribute.


medium rare beef roast on bbq

If you'd like to learn more about how to use a BBQ rotisserie click here.

If you'd like to see a Rotisserie Chicken recipe click here.

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› Rotisserie Beef Sirloin Roast

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