Toss broccoli with 1 tbsp melted butter, salt, and pepper; roast on a sheet pan at 425°F for 12 minutes.
Pat cod dry, season with thyme, salt, and pepper; pan-sear in remaining butter over medium-high heat 4–5 minutes per side.
Move broccoli to plate, top with cod, and drizzle pan juices with lemon juice over everything.
Serve hot with lemon wedges on the side.
Photo: Ella Olsson / Unsplash