3 large tomatoes, chopped 
1 medium-size onion, chopped
1 large sweet red pepper, chopped
2 teaspoons tamari or soy sauce 
2 cups cooked kidney beans 
1 1/2 teaspoons marjoram 
1 teaspoon basil 
1/2 teaspoon oregano

Place the tomatoes, onions, peppers, and tamari in a blender.
Process on low, then medium speed until smooth.
Place the sauce in a large skillet.
Add the beans, marjoram, basil, and oregano.
Bring to a boil, stirring frequently.
Reduce heat, cover, and simmer for 30 minutes, stirring occasionally.