Start by placing your butter at room temperature. Once it is softened, add it to the mixing bowl, along with the white sugar.
Mix those together, until they are nice and light & fluffy
Then blend int he brown sugar, again beat until nice, light and fluffy.
Add your eggs, and vanilla extract and mix well.
Add your flour, baking soda and salt and mix until everything is well combined.
Fold in your M&M's and then fold in your chocolate chips. Mix until the candy and chips are well distributed.
Spray an air fryer safe pan, that fits in your basket.
Set the time for 320 degrees f, for 15 minutes.
After 15 minutes check and see if it's done, if not add more time. Otherwise, remove.
Let cool, before you cut and serve.