Melt the chocolate and butter in a bowl over hot water.

Beat eggs and sugar until pale (use a beater or mixer) add vanilla essence.

Once chocolate has melted, slowly add to the eggs and sugar mix.

Sift flour over the chocolate and egg mix and fold in with a spatula.

Fold in walnuts.

Line a tray with grease-proof paper. Pre-heat oven to 160 C and bake for 25-30 minutes. Do not over cook.

The brownie should be moist inside - delicious!