Birdhouse Cake

 I call this one "White Cake is for the birds"  

(I'm a chocolate fan, but thought I should provide two different kinds for my grandma's birthday open-house.)

I made things up as I went, but here's the general directions:

1. Bake a cake in a 9x13 pan, removed from pan and let cool on wire rack.
2. Cut cake in half and stack the two layers (without frosting)
   
3. Cut the roof line using a serrated bread knife.
4. Unstack and cut a round whole in one layer.
5. Frost the top of the layer without the hole.
6. Restack, the frost the entire outside of the cake and decorate!