I've seen many chefs in person and on cooking shows using a propane
torch to brown things.
(usually a desert)

tonight, i pan fried fajitas (tgif brand.. come precooked), they were
plenty hot on the inside
but i wanted a crispy shell, so I torched them, poifect!

easiest way to light a torch, crack the on valve just a little... the
less gas coming out the easier it is to light, use a cigarette lighter
or a match. If you open the valve alot to light a torch its not going
to light