Add all ingredients to a blender. Blend on low speed until combined, increasing the speed a little to make a smooth pudding. Stop and scrape down the sides of the blender if needed.
Taste the mixture and add a little additional sweetener if needed.
Remove from molds and serve cold. (You can let them sit at room temperature for a few minutes so they soften just slightly before serving if desired.)
Notes
Use ripe avocado that's just soft to the touch. You can also use slightly thawed frozen avocado.
The amounts listed are my preference for ensuring that these taste like fudge pops, but you can reduce the maple syrup and/or the cocoa powder to 2 tablespoons if you prefer.
Taste the mixture before you spoon it into the molds and add more sweetener as needed. (Some cocoa powder is more bitter than others.)
Store frozen popsicles in a sealed freezer bag, with as much air removed as possible, for up to 3 months in the freezer.