Garlic Horseradish Sirloin Roast

• top sirloin roast↗3 lbs
• garlic cloves↗4

  slivered

• light mayonnaise↗1⁄4 cup
• prepared horseradish↗2 tablespoons
• dried sage↗1⁄2 teaspoon
• salt↗1⁄2 teaspoon
• pepper↗1⁄2 teaspoon
• onions↗4

  thickly sliced

• beef stock↗1 cup
• Worcestershire sauce↗1⁄2 teaspoon
• cornstarch↗1 tablespoon

Step-by-step instructions

1. 1

   With a sharp knife tip, cut about 40 slits all over roast.

2. 2

   Stuff each slit with a garlic sliver.

3. 3

   In a small bowl, whisk together mayonnaise, horseradish, sage, salt and pepper, brush all over roast.

4. 4

   Place onions in centre of roasting pan, place roast on top of onions.

5. 5

   Roast in 325°F oven until thermometer registers 160°F for medium, about 2 hours.

6. 6

   Transfer to cutting board and tent with foil, let stand for 10 minutes before carving.

7. 7

   Skim fat from pan juices.

8. 8

   Pour in beef stock and Worcestershire sauce, bring to boil, stirring scraping up brown bits.

9. 9

   Whisk cornstarch with 1 tablespoon water, whisk into pan and cook, whisking until thickened and glossy, about 2 minutes.

10. 10

    Strain and serve with beef.