Make your next roast peppery by rubbing crushed peppercorns and garlic on a Tri-Tip Roast. Compliment the beef with a delicious garlic-sherry sauce.
Preheat oven to 425°F. Combine Rub ingredients; press evenly onto all surfaces of beef roast.
Place roast on rack in shallow roasting pan. Do not add water or cover. Roast in 425°F oven 30 to 40 minutes for medium rare; 40 to 50 minutes for medium doneness.
Remove roast when instant-read thermometer registers 135°F for medium rare; 150°F for medium. Transfer roast to carving board; tent loosely with aluminum foil. Let stand 20-25 minutes. (Temperature will continue to rise about 10°F to reach 145°F for medium rare; 160°F for medium.)
Meanwhile, prepare Sauce. Combine sherry and garlic in small saucepan; bring to a boil. Cook 1 to 2 minutes or until liquid is reduced by half. Dissolve cornstarch in broth; add to saucepan. Bring to a boil, stirring constantly; cook and stir 2 to 3 minutes or until slightly thickened. Season with salt and ground black pepper, as desired.
Carve roast across the grain into thin slices. Serve with sauce.