Tender Beef Brisket Prep: 5 Cook: 180 Original Source Ingredients 1 envelope Knorr® French Onion recipe mix 3/4 cup water 1/2 cup ketchup 1/2 tsp. Lawry's® Garlic Powder With Parsley 1/2 tsp. ground black pepper 3-lb. boneless brisket of beef Instructions Preheat oven to 325°. Combine all ingredients except brisket in a 13 x 9-inch baking dish. Add brisket and turn to coat. Loosely cover with aluminum foil and bake for 3 hours or until brisket is tender. If desired, thicken gravy.