Preheat oven to 190 degrees.
Mix the lime juice into the pears. Put into a baking dish.
Combine the ingredients from oats to cinnamon powder in a bowl.
Cut in the butter and mix till it looks like coarse crumbs. Spread evenly on top of the arranged pears.
Bakes for 20 minutes. Serve warm as is, or with some ice-cream or with some chocolate sauce, just like I did! :)