in baking dish sprayed with pam. layer sliced pears, white sugar sprinkled on top[or u may use splenda white and brown suagar] of pears then cinnamon and raisin scattered on top repeat til u get to top of baking dish.
in med bowl add 1 softened stick butter, about a cup brown sugar, and 1/2 cup flour[a little more if needed. a little at a time. u can always add but u can't take it out]. with fork mush it til its crumbly. scatter on top of dish.
place in pre-heated oven til pears r tender, probly 30-40- mins.
take out and serve warm with scoop of vanilla ice cream.