How exactly does one sear a roast? I would try that. Although I have to be very careful with smoke because my smoke alarm rings very easily. And then the alarm company calls very angry.
Also, I still don't have a meat thermometer. So is 1 hour okay for a 2 lb roast? And how do i tell if it's ready without slicing into it?
Put the pan you're going to use for roasting the roast over a burner on the range. Turn on the fan over the range. Turn on the burner, to medium high. Put the roast in the pan and just let it cook for a minute or two, until it starts to get a nice sear on the bottom side. Turn the roast over, repeat. Turn the roast on one side, repeat. Turn the roast over, repeat. If you can, get the other two sides seared, too.
Thermometers aren't that expensive, and are a handy gadget to have around. I like my probe theremometer, which has a digital readout that stays outside the oven while the probe stays in the roast. But instant-read thermometers are worth having in the kitchen as well.
The idea behind roasting is low heat and slow. This gives the meat, which is usually a tougher cut, time to relax and tenderize. DO NOT try to rush things, or all you will get will be a hockey puck for dinner, and I'm not talking about your dinner guests. Plan on at least two hours cooking time, preferably three. And make sure you have plenty of liquid in the roasting pan; this is a braising technique, where the liquid helps keep the meat moist.