Beef and groundnut stew

2 pounds boneless beef chuck pot roast, cut into 1-inch cubes
1 tablespoon peanut oil or cooking oil
1 large onion, chopped (1 cup)
2 cups water
2 large tomatoes, peeled and chopped (1-1/2 cups)
1/2 cup finely chopped fresh, mild green chili peppers (such as Anaheim)
1 teaspoon salt
1/2 teaspoon crushed red pepper
3/4 cup peanut butter
3 cups hot cooked rice
6 hard-cooked eggs, sliced (optional)

1. Trim fat from meat. In a 4-quart Dutch oven brown half the beef in the hot oil. Remove from pan. Brown remaining beef with the onion. Drain off fat. Return all beef to pan.
2. Stir in water, tomatoes, chili peppers, salt, and crushed red pepper. Bring to boiling; reduce heat. Simmer, covered, about 1-1/2 hours or until meat is tender.
3. Remove about 1 cup of the broth from the meat mixture; stir into peanut butter. Return peanut butter mixture to Dutch oven. Heat through. Serve over hot cooked rice. Garnish with egg slices, if desired.