The one-dish meal is usually a pot of soup or stew (and sometimes a salad) but another way I’ve found to do this is an all-in-one supper roasted in the oven on a cookie sheet. (The clean-up is super easy too if you line the cookie sheet with foil.)
Because asparagus is in season, I’ve been making this meal recently with roasted potatoes and onions, asparagus and fish.
Lately, Dover sole is the least expensive fish on offer at our favorite fish store, and I’ve found that it’s so quick and easy to cook it in the oven.
Simply rub a little oil on top of the filets, then season with salt and pepper and a scattering of herbs if you like (I used fresh thyme here; dill or chives or parsley would be fine too) and a squeeze of lemon juice. It takes only five minutes or so to cook the thin fillets.
The only trick to this all-in-one meal is the timing. I heat the oven to 400 degrees, start with the potatoes (tossed with a slick of oil), and then (when they’re getting soft), add the onions (also with a bit of oil). About 20 minutes in, I’ll add the asparagus (yes, a little oil and salt) and finally (when everything is about 5 minutes away), the fish, which cooks very quickly. If you are making this meal for more than two people, you will likely need two cookie sheets.
The potatoes and asparagus are forgiving (a little extra time in the oven won’t hurt) but check the fish often, as you don’t want to overcook it! It won’t hurt to open the oven every minute or two. If the filets are very thin or small, they may even take less than five minutes. As soon as the flesh turns white and flakes apart when touched with a fork, it’s done.
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