To make this recipe gluten free, substitute the bread flour with a high-quality gluten-free all-purpose flour blend that is designed for yeast baking and contains xanthan gum or a similar binder. Because gluten-free dough behaves differently, the texture may be less chewy and more delicate than traditional garlic knots. You may also need slightly less or more flour depending on the blend used. Be sure the yeast, garlic powder, Italian seasoning, Parmesan cheese, and any marinara sauce served alongside are certified gluten free, as ingredients and manufacturing practices can vary by brand.