Can I substitute another type of fish for the salmon in this recipe, and what adjustments would I need to make?
Yes—oily, similarly thick fillets such as Arctic char or steelhead trout can be swapped in with no other changes, while leaner or thinner fish like cod, haddock, or tilapia work if you brush them with a little extra oil and shorten the final roast to about 8–10 minutes (check for opaque flesh that flakes easily). Very thick, dense white fish (e.g., halibut) may need 2–3 additional minutes; otherwise the glaze, temperature, and pan arrangement stay the same.
How should I store and reheat leftovers so the salmon stays moist and the vegetables remain crisp?
Refrigerate leftovers within 2 hours, storing the salmon and vegetables in separate airtight containers for up to 3 days. Reheat the fish, loosely covered, in a 275 °F (135 °C) oven or at 50 % power in the microwave for 60–90 seconds just until warmed through, while spreading the vegetables on a hot sheet pan and roasting at 400 °F (200 °C) or under the broiler for 5–7 minutes so they recrisp. Keeping them separate prevents the salmon from drying out and lets the veggies regain their caramelized edges.
Can I use frozen winter vegetables instead of fresh, and how should I adjust the roasting time?
Yes—frozen butternut squash cubes, Brussels sprouts, or other winter-veg blends can be used straight from the freezer. Scatter them on a pre-heated 425 °F sheet in a single layer and give them 25–30 minutes (about 5–8 minutes longer than fresh) so the excess moisture evaporates and the edges start to brown before you add the salmon for its usual 10–12-minute roast. Keep the pieces well spaced and flip once midway to encourage caramelization rather than steaming.