Preheat oven to 450. Put chimchangas on baking sheet. Bake uncovered, for 13 to 15 minutes or until golden brown. Let chimchangas stand for 5 minutes to cool slightly. Cut each diagonally in half. Arrange on serving platter. Serve with Chipotle Cumin Dipping sauce.
For sauce:In a bowl, stir together sour cream, chipotle sauce, cilantro and cumin. Spoon sauce into a serving bowl.