Combine first 4 ingredients in a small bowl; set aside.
Melt butter in a large nonstick skillet over medium heat. Add quinces; cover and cook 6 minutes, stirring occasionally. Add sugar mixture, pear, and apple; cover and cook 12 minutes, stirring occasionally. Stir in pepper; garnish with cinnamon sticks, if desired.
Note: This dish will hold up for up to 3 days if refrigerated in an airtight container. To serve, reheat over low heat.