1. Put the potato, beans, ¼ cup water, and the pepper in a large covered casserole and cook in the microwave oven for 3 minutes.
2. Add the onion and carrots and cook until almost tender (about 10 minutes). Add the peas and cook until tender.
3. Blend the butter, flour, and salt. Gradually stir in the water. Add to the vegetables, stirring. Stir in the cream.
4. Cook, covered, until the liquid has thickened and reached the simmer stage, stirring from time-to-time to keep the flour in suspension. Do not let boil.
NOTE:
A little snipped parsley could be served over the soup as a garnish.