Delicious Crab Bake with Portobello Mushroom Ingredients 200g white fish fillets (skin removed) 315ml milk 25g butter 1 shallot, finely chopped spring onions x 2, finely chopped 2 cloves garlic, finely chopped 1½ tsp ground cayenne 3 tbsp plain flour 150ml double cream 2 tsp Dijon mustard Squeeze of lemon juice Salt and pepper 2 tbsp olive oil 325g portobello ...