Robin's Carrot Cake

2 cups flour
1 ½ cups sugar
1 tsp. cinnamon
2 tsps. baking soda
3/4 cup buttermilk
1 8 ½ ounce can crushed pineapple
½ cup oil
3 eggs
½ tsp salt
2 tsps. vanilla
1 cup coconut
1 cup chopped walnuts
2 cups grated carrots

ASSEMBLY: Combine dry ingredients; blend in oil, eggs, and buttermilk. Add remaining ingredients. Bake at 350 for 45 minutes.

Frosting

½ cup butter
½ 8 ounce cream cheese
½ box powdered sugar

Beat until creamy.