For the filling, combine marscarpone cheese, dried cherries and onions. Set Aside.
Place a chicken breast half between 2 pieces of plastic wrap. Using the flat side of a meat mallet, pound chicken lightly into a rectangle about ¼ inch thick. Remove plastic wrap. repeat with remaining chicken pieces. Spread filling evenly over chicken pieces to within ½ inch of edges. Fold in sides of each chicken piece, roll up from a short end. Secure with wooden toothpicks. For rub, combine brown sugar, salt and pepper. Sprinkle over chicken and rub in with your fingers.
For a charcoal grill, arrange medium hot coals around a drip pan. Test for medium heat above the pan. Place chicken on grill rack over drip pan. Cover ; grill for 20 or 25 minutes or until chicken is no longer pink. ( 170 F ) Serve with Cherry -Orange Sauce.
For a gas grill, preheat grill, reduce heat to medium. Adjust for indirect cooking. Grill as above. Serve with Cherry -Orange Sauce.
CHERRY ORANGE SAUCE
Finely shred enough peel from 1 large orange to zest 1 teaspoon. Set Aside.
Peel and section the orange over a bowl to catch the juices. Add enough additional orange juice to equal ¼ cup.
In a small saucepan combine ½ cup Cherry Preserves and the orange juice ; heat and stir until melted. Remove from heat. Coarsely chop the orange sections and add to preserves mixture along with the orange zest.
Recipe by Cuisine Test at https://donaldroyerdesign.com/francais/double-cherry-chicken-roll-ups/