They're quick, they're easy, they're delicious, they're totally awesome cookies!! Plus, you can add any filling you'd like.
Preheat over to 190ºC.
Add all of the dry ingredients in a medium or large mixing bowl and stir to combine.
Mix in the melted butter, vanilla and beaten egg. The dough should come together enough to form into balls. If it doesn't, add milk a dribble at a time until you can.
Line a baking tray with baking/greaseproof paper.
Roll dough into 1-inch (golf-sized) balls and place 2 inches apart on tray. The cookies will spread during cooking and will merge if you place them too close together. If they do, don't worry, you can gently separate them with a knife when they come out of the oven.
Bake in the preheated oven for 12-14 minutes or until cookies are lightly browned.
Remove from oven. At this stage, the cookies are still soft and you can easily separate any merged ones with a knife, just don't try to move them yet!
Let the cookies cool for 5-10 minutes before eating.
The best thing about this recipe is how adaptable it is. Chuck in a 1/3 cup M&Ms for delicious chocolatey-ness or, my personal favourite: 1/4 cup of chopped walnuts, 1/4 cup raisins, 1/2 tsp ground cinnamon & 1/4 tsp ground nutmeg. Yum!
Recipe adapted from Damn Delicious's M&M Cookies In A Jar.