Melt butter
in saucepan. Add green pepper and onions. Cook gently 3 minutes,
stirring. Add tomatoes,
1/2 cp (125ml) water, salt, pepper, thyme and basil. Bring to boil, turn
down heat, cover and simmer until tomatoes are soft. Add peas and simmer
5 minutes more. Add
cornstarch to cold water in a small jar with a tight lid. Shake until
well blended and stir into hot mixture gradually. Simmer 2 minutes. Drain shrimp
and rinse under cold water. Add to soup and heat well. Serve immediately.