Preheat oven to 400 degrees. Place fish filet on a parchment paper lined sheet pan. Make sure the filet is completely thawed otherwise it will release lots of water and the veggies will become soggy! Salt and pepper the fish on both sides. Mix together mayo and mustard and spread over the top of the fish, then sprinkle on the panko.
Scatter chopped veggies around fish, then add the olive oil and salt + pepper to them, mix it all with your hands to make sure its evenly coated.
Bake fish for 12-15 minutes, then broil for 2-4 minutes. Sprinkle with fresh dill. Enjoy!
I like to use swai because it is a meatier white fish and holds up well to the strong flavors of mustard. You can sub swai for any other white fish and this recipe will still work.
Make sure swai filet is completely thawed out before seasoning/cooking, otherwise it will release water and the veggies will become soggy!
When I make this for people I always serve it alongside some creamy mashed potatoes as well as a side salad. A nice white wine completes the meal.