Need another way to use apples? Try a dump cake.
Apple Blueberry Dump Cake
~6 medium apples, sliced thinly
~1 C blueberries (fresh, or frozen)
1 T flour
1/2 tsp. cinnamon
1 yellow cake mix
1 T butter
Place the apple slices in a lightly greased 9x13 pan. Top with flour and cinnamon.
Stir to coat. Then, add in the blueberries. If you're using frozen, do not thaw.
Top with 1 package yellow cake mix. 
Slice 1 T of butter into really thin slices and place over the top of the cake mix. 
Bake at 350 for ~1 hour, until topping is browned and filling is bubbly.
Cool slightly before serving. 
Enjoy!
Especially when celebrating an engagement of good friends :)
This post is linked to What did you Bake Today?
Apple Blueberry Dump Cake
