1-In a large mixing bowl, add butter: In a large mixing bowl, add butter and beat with an electric mixer until pale and creamy. Add sugar, vanilla extract and flour and beat briefly until a soft cookie dough forms. Stir through mini M&M’s.
2-Place the dough on a piece of: Place the dough on a piece of baking or wax paper and use your hands to mould the dough into a long circular roll. Roll the dough in the baking paper and squeeze the ends shut (like a paper covered lolly) or cover with cling wrap. Place in the fridge for at least 30 minutes.
3-Preheat oven to 180 C (350 F): Preheat oven to 180 C (350 F) standard / 160 C (320 F) fan-forced. Use a large knife to cut cookies into 1/2 inch thick slices. Place cookie dough on a baking tray lined with baking paper.
4-Bake cookies for approximately 12-14 minutes or: Bake cookies for approximately 12-14 minutes or until golden on the edges. Leave to cool completely.