HEAT oven to 350°F.
BEAT egg, sour cream, cream cheese and dry cake mix in large bowl with mixer just until cake mix is moistened. Add 1/4 cup butter; mix well. (Batter will be thick.)
SPREAD batter onto bottom of 13x9-inch pan sprayed with cooking spray. Arrange pear slices over batter; press lightly into batter. Sprinkle with dry jelly powder and cinnamon. Drizzle with remaining butter; sprinkle with nuts.
BAKE 40 to 45 min. or until toothpick inserted in centre comes out clean.
serving size = 1 piece (59 g)