Help with this recipe

This gumdrop cake has the best flavor but falls apart when I slice it. way too crumbly

What should I do the next time I bake this cake to make it stick together?

I just got the recipe the other day from a friend.

Whats in the recipe that would cake it to be so crumbly? Anything I need to change to make it work?

Here is the recipe:

Gumdrop Cake

2 sticks butter

1 8 oz. pkg. cream cheese

1 1/2 cups white sugar

4 eggs

2 1/4 cups flour

1 1/2 tsp. vanilla

2 tsp. baking powder

2 cups gum drops

1/2 cup walnuts

Put 1/4 cup of the flour over the gum drops coating well. Beat the

butter and the sugar, add eggs one at a time and beat well after each

addition. Beat in the cream cheese and the vanilla. Add flour, baking

powder and gumdrops. Mix well. Put in a well greased tube pan and

bake at 325 F 60 minutes. Note: I use the sugared gum drops

not the baking ones.