Preheat oven to 325°. In a bowl, beat butter, brown sugar and cinnamon until blended. Beat in flour, oats and walnuts until well blended. Press onto bottom and 1-1/2 in. up sides of a greased 9-in. springform pan. Place on a baking sheet. Bake 10 minutes. Cool on a wire rack., In a large bowl, beat cream cheese until fluffy. Gradually beat in milk and juice concentrate until smooth. Add eggs; beat on low speed just until blended (mixture will be thin). Pour into crust. Return pan to baking sheet. , Bake until center is almost set, 40-45 minutes. Cool on a wire rack 10 minutes. Loosen sides from pan with a knife. Cool 1 hour longer. Refrigerate overnight, covering when completely cooled., To serve, in a large skillet, melt butter over medium heat; saute apples until crisp-tender, about 5 minutes. Cool slightly., For glaze, in a small saucepan, mix cornstarch, cinnamon and juice concentrate until smooth; bring to a boil. Reduce heat; cook and stir until thickened, about 1 minute. Add 1 tablespoon glaze to sauteed apples; toss to coat., Remove rim from springform pan. Top cheesecake with apples. Drizzle with glaze. Serve immediately or refrigerate until serving.