Another quick and tasty recipe to try with frozen fish fillets is pan-seared fish with a garlic butter sauce. Begin by seasoning the fish fillets with salt and pepper. Heat some butter in a pan over medium-high heat and add minced garlic, cooking until fragrant. Place the fish fillets in the pan and cook for a few minutes on each side until golden brown and cooked through. Finish off by spooning the garlic butter sauce over the fish before serving with your choice of sides like steamed vegetables or a fresh salad.Yes, most of the recipes provided can be easily adapted to be gluten-free by using gluten-free substitutes for ingredients like breadcrumbs or soy sauce.