I tried my hand at a GF coffee cake today with really good results. I found this recipe from Odlums really straight forward.
To make the cake gluten free I used GF self raising flour from Aldi and added  1 tsp of Doves Farm Xantham gum to create some elasticity in this bad boy!!
I also added chopped walnuts to the topping because I’m crazy like that.
Easy peasy.