Preheat oven to 350 degrees. Peel, core and slice apples into 3/8” to ½” slices and place in a bowl. Add sugar and cinnamon and mix together thoroughly. Spread butter or margarine on one side of each of the tortillas, leaving the outer ½” unbuttered. Place one tortilla, butter side up, into an 8 inch pie pan, gently pressing it into the bottom of the pan. Place approximately half of the apple mixture into the pie pan and cover with another tortilla, butter side up. Spread remaining apples evenly into the pie pan. Cover with remaining tortilla, butter side up, and sprinkle with cinnamon and sugar. Bake for 15 to 20 minutes, or until the edges of the tortillas turns golden brown.