CHOCOLATE BROWNIES WITH PEARS AND BRAZIL NUTS

250g pack organic unsalted butter • 200g Green & Black’s Dark 70% Chocolate, roughly chopped • 250g Tate & Lyle Organic Caster Sugar • 3 Waitrose Large Free Range Organic Columbian Blacktail Eggs • 2 ripe organic pears, peeled, cored and diced • 100g Waitrose Organic Whole Brazil Nuts, roughly chopped • 175g organic self raising flour, sifted • 3 tbsp Green & Black’s Organic Cocoa Powder, sifted