70g dairy free margarine
100g dark cooking chocolate
170 g castor sugar
2 large free-range eggs, beaten
70 g plain flour
100g chocolate chips
1 tsp baking powder
1/4 tsp salt
1/2 tsp vanilla extract

greased pyrex square dish.

Method

1. Preheat the oven to 180°C gas 4
2. Take 1 tbsp of the flour and add to the choc chips in a little bowl. Stir so that the flour covers the choc chips (this stops them sinking to the bottom.
3. Melt the margarine and chocolate in a saucepan over a very low heat, stirring constantly.
4. Remove from the heat, add the sugar and allow to cool slightly.
5. Mix in the beaten eggs, then sift in the flour, baking powder and salt: fold in the vanilla extract.
6. Just before baking, add the choc chips, and stir in.
7. Pour the mixture into the baking dish and cook for 30 minutes.
8. Test with a skewer that it is just cooked through (the skewer should come out clean of mixture, although the choc chips will be melted & might stick to the skewer).
9. Cool in the tin and cut into squares.