<<Disclaimer: Verify this information before applying it to your situation.>>

the following crumb topping livens up any cake recipe

In a bowl combine

1 cup sugar [brown sugar  if you can take it]
1 cup chopped apple or whole raisins
1 cup chopped nuts [walnuts, almonds or pecans work well]
1/4 cup any gf flour
1 teas cinnamon
1/2 teas nutmeg
1/2 teas ground cloves
1/2 stick butter, melted

combine and sprinkle over cake batter....bake.  When cool, dust with
confectioner's sugar

**Note
I have found that if I include some of the spices used in the topping
into the cake batter, it adds a really nice touch.  So, for example, I
would add a teas of cinnamon along with half teaspoons of nutmeg and
cloves to the cake batter.

Really good---I make this for our weekly coffee hour at church and it
disappears instantly.