Smoked Sausage Stew

1 pound smoked sausage, cut into 1/2-inch slices
3 or 4 medium potatoes (peeled or unpeeled), cut into 1-inch cubes
1 (15 ounce) can green peas, undrained
1 (15 ounce) can chopped tomatoes, undrained
1 can French onion soup

Put all ingredients into a crockpot and cook on LOW for 5 to 6 hours.