Lemon-Garlic Rockfish with Browned Mushrooms & Creamy Mashed Russets
A Pacific Northwest seafood night that’s not your usual salmon: delicate rockfish in a garlicky lemon pan sauce, served over creamy mashed potatoes with sautéed mushrooms. Comforting, bright, and done in about 35 minutes.
Back to full listIngredients
- Rockfish Fillet (Wild Caught Fresh) ~1 lb (2 fillets) $5.99/lb (sale)
- Organic russet potatoes 1 lb, peeled and cut into 1-inch chunks $2.29/lb
- Simple Truth Organic® sliced white mushrooms 8 oz $3.99/8 oz
- Simple Truth Organic® garlic bulbs 2 cloves, minced $2.79/3 ct
- Lemon 1 lemon (zest + 2 tbsp juice)
- Butter 2 tbsp, divided
- Milk or half-and-half ¼ cup (more as needed)
- Olive oil 1 tbsp
- All-purpose flour (optional, for a light dredge) 2 tbsp
- Chicken or vegetable broth (or water) ⅓ cup
- Capers or Dijon (optional) 1 tbsp capers OR 1 tsp Dijon
- Salt and black pepper to taste
- Optional: parsley 1–2 tbsp chopped
Instructions
- Prep: Put potatoes in a pot, cover with cold salted water. Bring to a boil and cook 12–15 minutes until very tender. While they cook, pat rockfish dry; season with salt and pepper. Lightly dust with flour if using (shake off excess).
- Sauté mushrooms (stove): Heat a large skillet over medium-high with 1 tbsp olive oil + ½ tbsp butter. Add mushrooms and a pinch of salt; cook 6–8 minutes until browned. Add half the garlic and cook 30 seconds. Transfer mushrooms to a bowl.
- Pan-sear rockfish (stove): In the same skillet, add ½ tbsp butter if dry. Cook fish 2–3 minutes per side (depending on thickness) until just opaque and flaky. Transfer to a plate.
- Lemon-garlic pan sauce: Lower heat to medium. Add remaining 1 tbsp butter and remaining garlic; cook 20–30 seconds. Add broth, lemon zest, and lemon juice; scrape browned bits. Simmer 1–2 minutes. Stir in capers or Dijon if using; taste and adjust salt/pepper.
- Mash potatoes: Drain potatoes well. Mash with milk and ½ tbsp butter (or more to taste). Season with salt and pepper.
- Serve: Spoon mashed potatoes onto plates, top with rockfish and mushrooms, and finish with lemon pan sauce and optional parsley.
Health notes: ~600–750 calories per serving. Lean protein and satisfying starch; add extra veggies by stirring spinach into the mushrooms at the end.
Drink pairing: Wine: Washington State Sauvignon Blanc or a WA Pinot Gris. If you prefer beer: a clean pilsner.