Wash the pears, core them, then chop them up.
I put these into the crumble bowl, put the oven on to 140C and baked them with some water and two tablespoons of sugar for 20 minutes.
Tip out some of the excess water if there is more than a centimetre or so in the bottom of the bowl, then sprinkle on some sugar. The more sugar you add, the sweeter your crumble will be. I added very little as pears are sweet anyway.
I simply tip some flour into a bowl, then top up with oatmeal. I'd say it was likely to be around 100 grammes. I added about four times as much oatmeal, them mixed it well.
Add sugar. Do it to taste. I just tipped some out of my pack, about the same amount as for the flour.
Add in a couple of tablespoons of soft butter, then work the mix into breadcrumbs. Add a little more butter if you need to.
Bake in a moderate oven, around 160 degrees C for about 20 - 30 minutes, or until the top begins to turn golden brown in colour.
Serve with cream, custard, toffee sauce, or just on its own. Fabulous