My grandmother passed this recipe down to my mom, and it's a gem. The tasty sauce makes the beef and carrots so tender, and it's made with many ingredients you'll already have on hand. You won't want to eat pot roast any other way! —Krista Smith Kliebenstein, Broomfield, Colorado
Grilled Sirloin Roast Recipe photo by Taste of Home
In a small bowl, combine the flour, ketchup, Worcestershire sauce, brown sugar, vinegar, 1 teaspoon salt and mustard until smooth; set aside. Sprinkle pepper and remaining salt over roast.
Grill roast over medium heat for 5-10 minutes or until browned on all sides. Transfer to a heavy-duty 13-in. x 9-in. disposable foil pan. Pour reserved sauce over roast. Top with the carrots, tomatoes and onion. Cover pan with foil.
Grill over indirect medium heat for 3 to 3-1/2 hours or until meat is tender.