Grease and line a 18cm x 26cm rectangular slice tray with baking paper and set aside.
Melt the butter and use a whisk or electric beaters to mix the butter and brown sugar together until smooth and creamy.
Add the sifted cocoa powder and the vanilla extract and beat through.
Add the eggs to the mixture and beat together well.
Sift the self-raising flour over the top and gently fold through.
Spoon the mixture into the prepared tin (it will be thick) and spread out evenly.
Sprinkle the M&Ms over the top.
Bake for 20-25 minutes or until the top has hardened with a crust and the centre is soft (but not gooey).
Allow to cool completely in the tin before cutting into slices.
Serve warm or cold.
Store in an airtight container for up to 5 days.
Thermomix Method
Preheat oven to 160 degrees celsius (fan-forced). Grease and line a 18cm x 26cm rectangular slice tray with baking paper and set aside.
Place the butter into the Thermomix bowl and melt for 2-3 minutes, 80 degrees, Speed 2, (or until melted).
Add the brown sugar and cocoa powder and mix for 10 seconds, Speed 4. Scrape down the sides of the bowl and repeat for a further 10 seconds.
Add the vanilla extract and eggs and mix for 10 seconds, Reverse, Speed 4. Scrape down the sides and repeat.
Add the self-raising flour and mix for 5 seconds, Speed 4. Scrape the sides of the bowl and repeat.
Spoon the mixture into the prepared tin (it will be thick) and spread out evenly. Sprinkle the M&Ms over the top.
Bake for 20-25 minutes or until the top has hardened with a crust and the centre is soft (but not gooey).
Allow to cool completely in the tin before cutting into slices. Serve warm or cold.
Store in an airtight container for up to 5 days.
Video
Notes
StoringStore the brownies at room temperature in an airtight container for up to five days.FreezingIf you would like to freeze these M&M brownies, then be sure to store them in a freezer-safe bag or container and freeze for up to three months.Regular M&Ms can be used for baking Alternatively you can use any hard candy covered chocolates, such as Smarties.ServeAt room temperature, or warmed up with a scoop of ice-cream for an easy dessert.