How To Cook a Top Sirloin Roast

Name: How To Cook a Top Sirloin Roast
Prep time: 5 min
Cook time: 2 h
Total time: 2 h 5 min
Yield: 8 serving
Ingredients: 4-6 pounds sirloin roast; 1/2 cup butter; 2 teaspoons rosemary; 2 teaspoons garlic; 1 teaspoon sea salt; 1/2 teaspoon thyme; 1.4 teaspoon black pepper; 6-8 cups carrot; 6-8 cups potato; 6-8 cups onion

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Prep Time
5 mins
Cook Time
2 hrs
Total Time
2 hrs 5 mins
Servings
8
Calories
358 kcal
Course
Main Course
Cuisine
American

How To Cook a Top Sirloin Roast

Alina Leblanc

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How To Cook a Top Sirloin Roast uses a butter-herb mixture spread on the surface of a large roast, which is then seared uncovered at high heat and finished cooking covered at a lower temperature alongside chunked vegetables. This method results in a flavorful, well-browned roast with tender, juicy meat and roasted vegetables cooked underneath.

Description

The recipe starts by allowing the sirloin roast to reach room temperature before preheating the oven to 450°F. A seasoned butter blend with rosemary, garlic, sea salt, thyme, and black pepper is prepared and spread on top of the roast to infuse flavor and aid browning.

The roast is set atop a bed of chunky carrots, potatoes, and onions in a roaster and cooked uncovered at high heat briefly to sear and brown the exterior. Then the oven temperature is lowered to 325°F and the roaster is covered to roast gently until reaching about 10 degrees below the desired final temperature, relying on carryover heat to finish cooking while resting.

Resting the roast for 20 minutes allows juices to redistribute, keeping the meat moist. The vegetables beneath absorb drippings adding depth of flavor. The method works for both top sirloin and sirloin tip roasts.

This roasting technique creates a well-seasoned crust and tender interior with practical timing based on thermometer readings. Using a roaster with a cover keeps the moisture in for even cooking.

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Ingredients

Servings

4-6 pounds sirloin roast top sirloin or sirloin tip

Seasoning

1/2 cup butter softened
2 teaspoons rosemary dried
2 teaspoons garlic minced
1 teaspoon sea salt flaked
1/2 teaspoon thyme dried
1.4 teaspoon black pepper ground

Vegetables

6-8 cups carrot cut into large chunks; you can make more in a large roaster if feeding more people
6-8 cups potato
6-8 cups onion

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Instructions

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Remove your roast from all its packaging and let it sit out for an hour until it’s about room temperature.
Pre-heat your oven to 450.
Mix the butter and seasoning together until combined.
Cover the top of the roast in the butter mixture.
Place the vegetables in the bottom of the roaster.
Place the roast in the center of the vegetables.
Place in the oven - without the lid! - and cook for 15-20 minutes, until the top of the roast is seared and brown.
Turn the oven temperature down to 325 and place the lid on the roaster.
Cook to 10 degrees BEFORE your desired temperature - 120-140 - see my chart in the post. Your roast will continue cooking after you pull it out of the oven.
Remove and set on stove for 20 minutes, keeping the lid on and the roaster sealed ( instead of tenting with tinfoil.)

Notes

Nutrition depends on roast size and does not include the vegetable components.
The cooking method works equally well for top sirloin or sirloin tip cuts.
Letting the roast rest covered in the roaster for 20 minutes after cooking helps retain juices and finish the roast through carryover heat.

Nutrition Information

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Calories 358kcal (18%) Protein 52g (104%) Fat 15g (23%) Saturated Fat 8g (40%) Cholesterol 171mg (57%) Sodium 214mg (9%) Potassium 904mg (19%) Vitamin A 355IU (7%) Calcium 15mg (2%) Iron 1.8mg (10%)