Bri's Beef Roast in an Oven Bag

I cook it in an oven bag - and it stays moist that way. I cook it until it's still a little pink and then let it rest for 20 or so minutes and it ends up cooked through without drying out. In the bag, untouched. I don't always toss the veggies in, but usually I do. I put a tablespoon of flour in the bag, toss in the veg, salt and pepper the roast, put like half a cup of water over the veg, put the roast on the veggies .. tie up the bag, cut a couple of slits in the top and cook it at 325.