Preheat oven to 350 degrees F.
the bread in a food processor
to get slightly coarse bread crumbs.
Coat a casserole dish
just large enough to hold the fillets with 1 tablespoon butter. Place the fillets in the dish and season with salt, pepper, lemon zest
and juice, and thyme
the remaining 1/2 stick of butter in a large skillet with the smashed garlic. As soon as the butter starts to bubble, turn off the heat and let the garlic infuse the warm butter.
Remove the garlic chunks from the butter. Add the bread crumbs and lightly toss until all the butter has been absorbed. Turn the heat off, stir in the parsley and season, to taste, with salt and pepper.
Spread a layer of bread crumb mixture over the top of each fillet and bake for 12 to 15 minutes until bread crumbs
are golden brown and fish
is cooked through.