Here is Mrs Beaton's prawn curry recipe; super simple and the sauce is amazing with chicken too. v mild and slightly sweet. Great for kids until they get their 'spice legs'.
586.—PRAWNS, CURRY OF. (Fr.—Crevettes à l'Indienne.)
Ingredients.—2 dozen prawns, 1½ ozs. of butter, 1 dessertspoonful of curry powder, 1 dessertspoonful of flour, 1 sour apple coarsely-chopped, 1 small onion sliced, 1 tablespoonful of cocoanut grated, 1 teaspoonful of lemon-juice, ½ a pint of stock, salt.
Method.—Shell the prawns and put them aside. Melt the butter in a stewpan, fry the onion without browning, then add the curry-powder and flour, and fry slowly for at least 20 minutes. Add the stock, apple, cocoanut, and a little salt, simmer gently for ½ an hour, then strain and return to the stewpan. Season to taste, add the lemon-juice put in the prawns, and when thoroughly hot serve with well-boiled rice.
Time.—About 1 hour. Average Cost, 2s. 6d. to 6s., according to the size of the prawns. Sufficient for 5 or 6 persons. Seasonable at any time.
(a side note: 24 prawns for 5 or 6 people!)