• Preheat the oven to 180°C (350°F) and line a 9'x13' baking tin with baking paper.
• Melt the butter and dark chocolate together.
• Mix the eggs, sugar, brown sugar and vanilla extract together until the mixture becomes a light golden colour.
• Mix in the chocolate mixture.
• Spread the mixture into the prepared pan in an even layer.
• Bake for 20-25 minutes. The top and sides will be set and the middle will have crumbs attached to a skewer inserted but should not be wet.
• Allow the brownies to cool completely before slicing.

Icing;

• While you wait for the brownies to cool, make the icing.
• Beat the softened butter, vanilla, milk and icing sugar together.
• Add the green food colouring a few drops at a time until you have the desired green. (A darker tree green).
• Place in a piping and either just snip off a small corner of the bag or use a small piping tip to pipe.

Christmas Trees;

• Slice the brownies down the middle length-ways.
• Slice each half into pieces shaped as triangles. You should have around 10-12 pieces.
• Using your icing and starting from the tip of the triangle, decorate each 'tree' with the icing. (See photos for details.
• Place an M&M on each corner of the icing as the 'decorations' and you're done!