In saucepan, heat sugar and orange juice until sugar dissolves; cool.
In blender, puree strawberries with orange juice mixture and Grand Marnier. Strain.
To assemble Crêpes:
In electric mixer with paddle attachment, mix cream cheese, sour cream, sugar and vanilla until smooth.
Add chocolate chips; mix just until chips are evenly incorporated.
Lay 1 crêpe on work surface. Place 1 tablespoon cream cheese mixture in center of crêpe, top with 3 or 4 slices strawberry. Fold up bottom edge of crêpe, fold in both sides and roll up to form a rectangular package.
Repeat with remaining crêpes. Refrigerate, covered.
For each serving, to order:
In sauté pan, melt 1 tablespoon butter over medium heat.
Cook 2 crêpes about 4 minutes on each side or until golden brown and warmed through.
Place crêpes on plate; spoon ¼ cup Strawberry-Grand Marnier Sauce on top. Garnish with sliced strawberries.