Haddock With Red Currant with lemon

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[...]

1 tablespoon vegetable oil 4 small red potatoes, sliced thin 2/3 cup red onion , sliced thin 1 teaspoon red pepper flakes 3/4 teaspoon thyme 1/2 teaspoon[...]