Gluten Free Banana Chocolate Chip Muffin Recipe

This is a recipe from my late Grandma Garman, converted to a gluten free version. They actually turn out quite good, and while I made a batch of each GF and non-GF for my family last time I visited, they all ate the GF ones even though they didn't have to. I'd have to say that's a sign these babies are GOOOOOD. :D

Gluten Free Flour Mix:
2 cups rice flour
2/3 cup potato starch
1/3 cup tapioca starch/flour

Muffin Recipe:
1/2 cup butter (I use salt-free)
1 cup sugar
2 eggs
1/4 cup sour milk
1 cup mashed banana
2 cups GF flour mix
2 1/2 tsp GF baking powder
1/2 tsp baking soda
1/2 tsp salt
half package Hershey's Chipits Semi-Sweet Chocolate Chips

Mix wet ingredients on low speed until blended. Stir in dry ingredients, then mix on medium speed until smooth. Fill muffin cups 1/2 to 3/4 full. Bake for 20 minutes at 375 degrees F.

I'd love to hear your feedback on this recipe!! It's an old family fave.