Apple Breakfast Sandwiches

1/3 cup firmly packed brown sugar 
2 tbs all purpose flour 
1/2 tsp ground cinnamon 
1 can (10 oz) refrigerated buttermilk biscuits 
1 cup shredded sharp cheddar cheese 
2 large apples, peeled, cored and cut into rings 
1 tbs butter or margarine, melted 

Combine first 3 ingredients in a small bowl, set aside. Separate biscuits and press each into a 3" circle. Place on lightly greased baking sheets, sprinkle with cheese and top each with an apple ring. Sprinkle with reserved sugar mixture and drizzle with melted butter. Bake at 350 for 15 minutes or until crust is golden. Serve immediately. Serves 10.