This is one of my mother-in-law's recipes. She was an excellent cook.
1 box Duncan Hines yellow cake mix
1/2 C. brown sugar
1/3 C. Crisco oil
2 C. boiled and drained squash
Combine and beat 3 minutes at medium speed. pour in a well greased and floured 9x13 pan. Backe at 350 degrees for 30 minutes.
1 C. coconut
1 C. brown sugar
1/2 stick oleo or butter
4 T. evaporated milk
1/2 C. chopped nuts
Mix buttermilk, brown sugar and boil 2 minutes. Add nuts and coconut. Mix well and spread on cooled cake. Return to oven until icing bubbles.