So I forgot to mention… XANTHAN GUM! It is your new best friend, trust me. I didn’t realize how important it was until my first batch of gluten free blueberry muffins went horribly wrong. I thought it was a “suggestion” in recipes, but it is not. It will give you the consistency you need.
Add 1/2 teaspoon xanthan gum per 1 cup of flour mix.
If you are using the store bought kind it might already be in it so check your flour.