Preheat oven to 350 degrees, spray or prep 9x13 baking dish.
Mix together in large bowl: eggs, sugar, butter, pumpkin, applesauce, oats, vanilla, cinnamon, ginger, nutmeg, and cloves. Set aside and let sit for at least 5 minutes. (Allows oats to soften and spices to "mingle.").
In medium mixing bowl, combine baking mix, baking soda, baking powder, and xanthan gum. Add slowly to wet ingredients, mix well, but do not overmix.
Pour into prepared baking dish, bake for 25-30 minutes or until toothpick inserted in center comes out clean.
While cake cools, mix all icing ingredients together, beat for 1 minutes.
I iced the cake while still warm, poked cake with toothpick, so icing soaked into cake.
Garnish with chopped pecans or walnuts on icing, if you want.