Gluten Free Strawberry Banana Streusel Muffins are awesome! This wonderful muffin recipe is filled with strawberries, bananas, and a strawberry-banana Greek yogurt. They have a streusel topping with walnuts, and a vanilla cream frosting. They are rich and decadent, yet gluten free! These muffins are ideal for holidays and special occasion breakfasts, especially if you have family members that need to adhere to a gluten free diet.