Add the unsalted butter and light brown soft sugar to a bowl and beat until creamy.
Add in the egg and vanilal extract and beat again.
Add in the plain flour, baking powder, bicarbonate of soda, and sea salt and beat until a cookie dough is formed!
Add in the milk chocolate chips, dark chocolate chips and M&Ms and beat until they're distributed well!
Weigh the cookies out into eight cookie dough balls - they're about 120g each!
Once they're rolled into balls, put your cookie dough in the freezer for at least 30 minutes, or in the fridge for an hour or so!
Whilst the cookie dough is chilling, preheat your oven to 180ºC Fan, or 200ºC regular! If your oven runs hot, go for 160ºC-170ºC.
Take your cookies out of the freezer/fridge and put onto a lined baking tray. I put four cookies per tray!
Bake the cookies in the oven for 11-13 minutes. I don't personally flatten the cookies, as they flatten enough during baking - however, if you like flat cookies, flatten them a bit before baking.
Once baked, leave them to cool on the tray fully.
Once cooled, melt the dark/milk chocolate for the decoration, and then dunk each cookie halfway into the chocolate and rest on a lined baking tray.
Sprinkle each cookie whilst still wet with christmas sprinkles, and then leave to set fully.
ENJOY!
Notes
Once baked, these will last for 4-5+ days!
You can freeze the raw, shaped cookie dough for 3+ months and bake straight from frozen (12-14 minutes).
You can use any chocolate you fancy, I just love the combination of milk and dark chocolate!
You can use chocolate bars chopped up instead of chocolate chips, just make sure the chunks aren't too big!