2. Mix the flour and oats together in a bowl. Chop the marg into chunx and rub into the oat mixture. You will know if you have the right amount, as the mixture should resemble breadcrumbs. If it still looks 'floury', add more marg. Stir in the rest of the brown sugar.
3. Slice the plums thinly, then arrange in a thick layer at the bottom of a baking tray. Pour syrup over the top, then top with crumble mixture. (I divide the ingredients between 2 baking trays, and freeze one for future use at this point).
4. Splash top with a little water, then bake in a hot oven (200C/390F/gas 6) for 35-40 mins.
Great with custard!
Makes 4 generous (6 smaller) portions, or 2x 2 generous (3 smaller) portions. Freezes well.
posted by Ronny/Capybara Sprin