1Heat oven to 350°F. Make and bake cake mix as directed on box for angel food (tube) pan, using cold water. Cool completely, about 2 hours.
2In medium bowl, mix pie filling, strawberries and blueberries.
3Cut cake into 12 slices. Cut each slice in half diagonally to make 2 triangles. Arrange 2 triangles on each of 12 serving plates. Top with fruit mixture and whipped cream.