Haddock with seasoning

5 T. olive oil 3/4# mixed mushrooms (such as button, cremini,and shitake), stems trimmed and cut into bite-sized pieces 1/4 c. apple cider vinegar 2 tsp Dijon[...]

2 lbs haddock fillets , cut into 4 8-ounce portions 2 tablespoons lemon juice (about 1/4 lemons) salt 1 tablespoon olive oil 1 tablespoon softened butter 6[...]

500 g fresh spinach , washed 500 g haddock fillets , skinned 2 tablespoons olive oil 1 onion , chopped 2 celery ribs , chopped 1 green pepper , seeded and[...]