Ann's Blooming Lovely Chocolate Orange Cheesecake

3-4 oz (75-100g) vegan margarine
9 oz (250g) vegan digestive biscuits
1 lb (450g) firm tofu, mashed
juice of one and a half oranges
1 banana or rind of 1 orange
2 oz (55g) cocoa powder
3 tbsp oil
2 oz (55g) sugar
2-4 tbsp soya milk

1. Base: Melt the margarine gently in a saucepan. Crush the digestive biscuits until they resemble fine breadcrumbs. Remove margarine from heat and mix in biscuit crumbs. Press into 11 inch flan tin.
2. Topping: Mix the tofu, orange juice, banana or orange rind, cocoa, oil and sugar to a smooth consistency: preferably in a food processor. If it doesn't mix well, add a few tablespoons soya milk. Place over the base and smooth the top. Cook for 30-40 minutes at 175C/350F/gas mark 4. Remove from oven, cool and chill overnight in fridge. Add topping of your choice e.g. slices of orange or grated chocolate.