Caramel Apple Puppy Chow

 cups Rice Chex™ Apple Cinnamon cereal, divided*

green candy melts

lime green candy melts

 teaspoon shortening

 cup vanilla cake mix, divided

cup granola (I used cinnamon sugar granola), divided

 teaspoon ground cinnamon, divided

carmel topping (I used Smucker's Hot Caramel)