Slice the peaches into quarters with a paring knife, discard the pit.
Put the sliced peaches into a food process or blender and process on high for about 2 minutes, scraping down with spatula as needed. Should be a liquid consistency.
Add the 1/2 cup orange juice to the liquid and process for a few more seconds.
Strain the peach mixture over a small saucepan with a fine strainer, using your spatula to help the juice move through the strainer. You should only be left with the skin of the peach.
Heat the peach sauce on medium-low heat. Add the sugar and cinnamon. Just went it's starting to bubble take it off the stove.
You can serve this over fruit, sponge cake, ice cream or what ever sounds yummy to you. This sauce can be used warm, room temperature or even cold.
Save left over in airtight container in refrigerator. Use within 2-3 days.
Notes
I just used a dash of cinnamon because I'm not a big fan, however I will admit it does add something special. You could also add nutmeg in addition or instead of the cinnamon.I used Truvia instead of sugar to reduce the calories.