1Heat oven to 450°F. Line cookie sheet with foil or cooking parchment paper. Place apple slices in single layer on cookie sheet. Bake 8 to 10 minutes or until lightly browned and slightly dry to the touch. Cool; chop apples.
2In medium bowl, stir Bisquick mix, buttermilk, salt and pepper until soft dough forms. Set aside 2 tablespoons of the cheese. Add chopped apples and remaining cheese to dough; stir until incorporated.
3Place dough on work surface sprinkled with additional Bisquick mix; knead 10 times. Roll dough into 1/2-inch-thick square. Cut into 9 biscuits. Sprinkle with reserved cheese. Place on ungreased cookie sheet.
4Bake 8 to 10 minutes or until golden brown. Serve warm.