Preheat oven to 200 and line a baking sheet with nonstick parchment or a silpat.
Combine strawberries, oranges and cooked carrots in a food processor and puree until smooth.
Transfer mixture to a small saucepan and cook over medium heat, stirring often, until mixture has thickened, about 20-25 minutes.
Pour mixture onto baking sheet and spread into a thin layer. I like to use a rubber spatula.
Bake for 3.5 hours. Let cool completely and peel off the silpat/parchement. Cut into thin strips and roll-up (i roll in parchment paper) and place in an airtight container for up to 1 week.
Recipe by Red Kitchenette at http://www.redkitchenette.com/2017/12/04/strawberry-carrot-orange-fruit-leather/