Tonight I put a sirloin roast into a Reynolds roasting bag, along with some chopped onion and a can of mushroom soup. I sprinkled just a little garlic pepper on top of the roast before I tied up the bag and poked a couple of air vent holes in the top. Popped it into the oven at 350 degrees and left it there for an hour and half. It was cooked so nicely – lots of flavor and plenty of gravy. What an easy way to make a great roast beef.