In blender, pour in half and half, whole milk, and Nutella. Pulse on high until well combined and slightly thickened. Place a teaspoon of M&M’s in each popsicle container or more if you like. Pour in Nutella mixture. Place it in the freezer to 4-6 hours or overnight.
To defrost: Place in warm water for a few seconds. Slowly pull out your Nutella popsicle and enjoy!!