1To make the cake: Preheat oven to 350 degrees F. Grease an 8 x 8-inch glass cake plate with cooking spray.
Mix pumpkin, yogurt, vanilla, egg whites and sugar well in a large mixing bowl. Once combined, add in baking soda, baking powder, flour, salt and pumpkin pie spice until fully mixed.
Bake for about 30 minutes, or until cake comes out dry when inserted with a toothpick.
To make the frosting: Mix cream cheese, powdered sugar and vanilla together. Once cake has cooled, frost and garnish with toasted almonds