Fish (or Chicken) with Veggies & Green Sauce

I couldn't decide what to call this so I enlisted the help of some facebook friends. They suggested "Halibut Fishatore," "Pesce Verde" and, inevitably, we wound up at "Green Fish." Call it what you like, it's yummy!
I had thawed some halibut to make another dish, but when I got ready to begin cooking I realized I had forgotten one of the parts of the recipe (which involved marinating the fish for two hours prior to cooking!). So I had to scrap that recipe and just threw this together on the spot. It may look a little complicated because it has several parts, but really they are all pretty simple. The only thing that's complicated is the sauce (which can burn), but so long as you keep an eye on it and stir it a lot you should be fine.
For those of you who for whom halibut isn't your 'cheap, always-on-hand' meat, you can use tilapia or another white fish, or chicken will also work nicely.

Serves about 6
Prep time--about 30-60 min, depending on whether you use canned/frozen veggies, and whether your meat is thawed.

MEAT

• About 2-3lbs thawed halibut (or chicken breasts/tenders/pieces)
• olive oil
• Salt and pepper
• Breadcrumbs

Put about 1/4inch of water in the bottom of a baking dish (1/2" if using chicken since it will cook longer). Put the fish in the dish and shake a little olive oil onto the fish. Sprinkle with salt, pepper and breadcrumbs. Put in the oven to bake (about 15-20 min for halibut, 30-45 for chicken, depending on size of pieces...just check it periodically)
Once the meat is in, start on the veggies.

VEGGIES

• 2 potatoes, chopped into 1/2in cubes (peel first if they have tough skins)
  
• 3/4 c peas
• 3/4 c chopped carrots (I used a frozen pea/carrot mix)
• other veggies if you prefer (asparagus, bell peppers, broccoli, etc)

Put everything in a little water and steam it until soft/warm. (About 7-10 min should be plenty.) Once that's in, make the sauce. 

SAUCE (this is a homemade version of Costco's spinach-artichoke-parmesan dip, so you could use theirs, just warm it up and thin it with a little milk...but of course homemade always tastes better)

• 4Tbs butter
• 4Tbs flour
• salt, pepper, garlic powder (I did about 1/2tsp salt and 1 Tbs garlic powder...I don't measure.)
• 1 1/2-2 cups of milk (whole is best of course, or cream would be good...)
• 3/4-1 cup of grated cheese (parmisan is ideal, but I didn't have any so I used monterey jack and it was good)
• 2/3-3/4c chopped spinach (I used frozen)
• 1/2-2/3c chopped artichokes (I used canned)

Mix the butter and flour in a saucepan over medium heat to make a rue. Be careful not to let it burn! Mix in spices. Slowly add about 1/4c of milk at a time, mixing after each addition. Add the cheese a little at a time, mixing often. Reduce heat to med-low. Add the chopped veggies and mix well. Let it sit on low heat if the other parts are not ready yet, otherwise bring it all to the table and serve immediately.

Serve the meat and veggies side by side, with the sauce poured over the top of everything.
It's pretty much awesome. All my kids liked it and the four-year-old asked for thirds.