This is one of my favorite gluten-free stir-frys and it does not require any substitutions! All of the ingredients are naturally gluten-free. I love the combination of orange, ginger, and sweet peppers in this dish. I vary the vegetables and alter what I serve it over. I have been on a spaghetti squash kick lately and was pleased that the sweet flavor of the squash blended well with the other ingredients. You can find the recipe Orange Ginger Stir-Fry over Spaghetti Squash Noodles at Premeditated Leftovers.