This recipe from Company’s Coming cookbook, 4 Ingredient Recipes, is very tasty, and easy to make.
If you don’t have garlic butter, you could use regular butter, and some minced garlic or garlic powder.
Orange Herb Fish Fillets
1 lb tilapia or sole, any small bones removed, cut into 4 equal pieces
1 tbsp garlic butter
1/3 cup finely chopped [...]